Lancom 1722 VoIP User Manual
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Lancom 1722 VoIP User Manual

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  • Page 1 LANCOM 1722 VoIP LANCOM 1724 VoIP...
  • Page 2 The reproduction and distribution of the documentation and software included with this product is subject to written permission by LANCOM Systems. We reserve the right to make any alterations that arise as the result of technical development.
  • Page 3 Internet, easily and conveniently. Additional to its data transfer functions, the LANCOM VoIP Router is a fully fledged, integrated VoIP communications solution. Along with Quality of...
  • Page 4 LANCOM 1722 VoIP – LANCOM 1724 VoIP Preface We ask you additionally to inform you about technical developments and actual hints to your product on our Web page www.lancom.de, and to down- load new software versions if necessary. User manual and reference manual The documentation of your device consists of three parts: the installation guide, the user manual and the reference manual.
  • Page 5 LANCOM 1722 VoIP – LANCOM 1724 VoIP Preface Our online services ( www.lancom.de) are available to you around the  clock should you have any queries regarding the topics discussed in this manual or require any further support. In addition support from LANCOM Systems is also available to you.

  • Page 6: Table Of Contents

    1.2 Which use does VPN offer? 1.3 Firewall 1.4 Voice over IP 1.4.1 Example applications 1.4.2 The central position of the LANCOM VoIP Router 1.5 Call switching: Call routing 1.5.1 SIP proxy and SIP gateway 1.5.2 User registration at the SIP proxy 1.5.3 Number translation at network transitions...
  • Page 7 LANCOM 1722 VoIP – LANCOM 1724 VoIP Contents 3 Basic configuration 3.1 Which information is necessary? 3.1.1 TCP/IP settings 3.1.2 Configuration protection 3.1.3 Settings for the DSL connection 3.1.4 Settings for the ISDN connection 3.1.5 Connect charge protection 3.2 Instructions for LANconfig 3.3 Instructions for WEBconfig...
  • Page 8 LANCOM 1722 VoIP – LANCOM 1724 VoIP Contents 7 Providing dial- up access 7.1 Which information is required? 7.1.1 General information 7.1.2 Settings for TCP/IP 7.1.3 Settings for IPX 7.1.4 Settings for NetBIOS routing 7.2 Settings for the dial-in computer 7.2.1 Dial-up via VPN...
  • Page 9 LANCOM 1722 VoIP – LANCOM 1724 VoIP Contents 11 Appendix 11.1 Performance data and specifications 11.2 Contact assignment 11.2.1 ADSL interface 11.2.2 ISDN 1 interface 11.2.3 ISDN 2 interface 11.2.4 Ethernet interfaces 10/100Base-T 11.2.5 Configuration interface (Outband) 11.3 CE declaration of conformity...

  • Page 10: Introduction

    The integrated VPN option enables the devices to act as powerful Dynamic VPN gateways for external offices or mobile users. The LANCOM Router models offer each a DSL or ADSL connector and also an ISDN connectors. One ISDN line can be used as back-up for the DSL connec-...
  • Page 11 Internet ADSL ADSL provider modem LANCOM VoIP Router In the LANCOM 1722 VoIP the ADSL/ADSL 2+ modem is integrated directly in the device. It can be directly connected to the splitter with the supplied cable. Telephone Telephone Switching node network...

  • Page 12: Which Use Does Vpn Offer

    'Annex B' ADSL-over-ISDN An 'Annex A' type LANCOM Router can only be used with ADSL-over-POTS service. Similarly, an 'Annex B' device can only be used with ADSL-over-ISDN service. Your network operator will be able to inform you of the version you need.

  • Page 13: Firewall

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 1: Introduction All participants have fixed or dial-up connections to the Internet. Expensive dedicated lines are no longer needed. ³ All that is required is the Internet connection of the LAN in the headquar- ters.
  • Page 14 Break-in attempts into the local network or on the central Firewall are rec- ognized, repelled and logged by the Intrusion Detection system (IDS) of the LANCOM DSL. Thereby it can be selected between logging within the device, email notification, SNMP trap or SYSLOG alarms.

  • Page 15: Voice Over Ip

    Supplementing existing ISDN PBXs VoIP functions can be conveniently added in to existing telephone structures by using a LANCOM VoIP Router. The LANCOM VoIP Router is simply con- nected between the public ISDN connection (e.g. ISDN NTBA) and the ISDN PBX.
  • Page 16 VPN connection and—thanks to the VPN encryp- tion—these calls are secured against eavesdropping. With a LANCOM VoIP Router located in the branch or home office, the two worlds of traditional and VoIP telephony can be united in a single telephone: A VoIP telephone or an existing ISDN telephone can be used for free tele- phone calls via VPN to the headquarters, or to make standard calls via ISDN.
  • Page 17 With the SIP trunking function, entire ranges of telephone numbers made up of external numbers and their associated extensions can be mapped by LANCOM VoIP Routers over a single connection to a SIP provider, assuming that the provider also supports Direct Dialing In (DDI) and can provide multi- ple connections simultaneously.
  • Page 18 Connecting local ISDN lines with a remote SIP gateway Companies with nation-wide and internationally distributed sites are often interconnected with VPN already. A LANCOM VoIP Router can be used not only to connect the SIP and ISDN telephones at a branch office to the SIP-PBX at headquarters;...

  • Page 19: The Central Position Of The Lancom Voip Router

    1.4.2 The central position of the LANCOM VoIP Router LANCOM VoIP Router take up a central position in the switching of telephone calls between internal and external subscribers over the different channels of communication. Depending on the model and equipment, the devices inter- connect the following communication participants and channels into a com- mon telephone infrastructure.
  • Page 20 ² Users and lines Telephony subscribers in internal areas can take part in voice communications and, in the LANCOM VoIP environment, are referred to as "users". The LANCOM differentiates between: ISDN users...
  • Page 21 (until the maximum available bandwidth is exhausted). As a "SIP gateway" line, the LANCOM VoIP Router provides a remote SIP PBX with a transition to the local ISDN network. The SIP gateway...

  • Page 22: Call Switching: Call Routing

    If negotiations between the terminal devices can agree upon a codec with lower band- width requirements, then the reserved bandwidth will be lowered accordingly. All packets from ISDN users are given a DiffServ marking by the LANCOM (with SIP users, the QoS marking is usually handled by the telephones or softphones).

  • Page 23: Sip Proxy And Sip Gateway

    The task of switching in the LANCOM are handled by the SIP proxy. A tele- phone signals the SIP proxy that it needs to establish a connection, and the SIP proxy uses certain rules to decide which line is to be used for the connec- tion.
  • Page 24 To prevent unknown subscribers from registering, authentication at the SIP proxy can be set as a prerequisite to local registration (local authenti- cation). In this case, an entry as a SIP or ISDN user in the LANCOM con- figuration is essential.
  • Page 25 VoIP domain of the SIP VoIP domain of the SIP PBX If SIP or ISDN users at the LANCOM VoIP Router are entered into the SIP PBX with different passwords, then the users have to enter their individual passwords upon registration. Consequently, each SIP or ISDN user has an entry into the LANCOM with the individual passwords, which are also entered into the SIP terminal devices.
  • Page 26 As ISDN terminal equipment cannot send domain information to register at the LANCOM, it must be entered as an ISDN user so that it can be rec- ognized by the VoIP system.

  • Page 27: Number Translation At Network Transitions

    Dynamic ISDN user registration at point- to-point lines When connecting downstream PBXs to a point-to-point interface of the LANCOM VoIP Router, the number of possible ISDN terminal devices is limited by the length of the extension number. With three-figure extension numbers, almost 1000 terminal devices can be connected, all of which can be managed as ISDN users in the LANCOM VoIP Router.

  • Page 28: The Call Manager

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 1: Introduction Mapping the destination telephone number ³ external MSN from the ISDN network · internal telephone number of the ISDN ¿ user » Mapping the source telephone number · » internal telephone number of the SIP user ³...

  • Page 29: Making Telephone Calls With The Lancom Voip Router

    1.5.5 Making telephone calls with the LANCOM VoIP Router Using the LANCOM VoIP Router opens up a variety of new possibilities for making telephone calls. Depending on the constellation of terminal equip- ment implemented (e.g. SIP or ISDN telephones, SIP or ISDN PBX systems)
  • Page 30 PBX) or VoIP terminal equipment such as SIP telephones or PCs with VoIP software. As a new and central building block in the telephone structure, the LANCOM VoIP Router assumes many of the PBX tasks for connected terminal equip- ment.
  • Page 31 ISDN PBX. In the PBX, automatic outside line access is enabled, the call router settings for the LANCOM 1722 VoIP decide whether or not a "0" must be dialed for outside line access for the connected ISDN and SIP sub- scribers.
  • Page 32 Via local telephone numbers you can reach external parties who are in the same local telephone network as the LANCOM VoIP Router, i.e. users with the same area code as the public line for the LANCOM VoIP Router. In decentralized locations that extend beyond city or state boundaries, the physical location of the device is decisive, even if a central PBX is located at a different location.
  • Page 33 Dialing using specific lines With the LANCOM VoIP Router, other lines, in addition to the previously exist- ing ISDN exchange lines, can be defined for voice communication, i.e. to a SIP PBX connected via VPN or to a public SIP provider via the Internet.

  • Page 34: Voip Characteristics Of The Lancom Voip Routers

    VoIP characteristics of the LANCOM VoIP Routers Multiple ISDN interfaces The ISDN ports (two with the LANCOM 1722 VoIP, four with the LANCOM 1724 VoIP) can be freely configured as internal or external connections and offer up to eight parallel ISDN voice channels. This allows, for example, an existing ISDN PBX to be additionally equipped with SIP and connected to an upstream VoIP PBX.
  • Page 35 LANCOM VoIP Router can be connected to a point-to-point connection. To connect a LANCOM VoIP Router, the interface that is used is set up for the type of line in use. Equipment connected to an ISDN connection can be addressed in two ways: The devices are addressed with a multiple subscriber number (MSN) that is linked to the ISDN connection and cannot be influenced.

  • Page 36: What Can Your Lancom Router Do

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 1: Introduction What can your LANCOM Router do? The following table shows the properties and functions of your device: Applications ✔ ✔ Internet access ✔ ✔ LAN to LAN coupling via VPN ✔...
  • Page 37 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 1: Introduction ✔ ✔ SIP trunking for mapping SIP accounts with main external telephone numbers and extensions. ✔ ✔ Registration at and switching to upstream SIP PBXs ✔ ✔ Individual/shared password for authentication ✔...
  • Page 38 With LCOS version 6.0 only one ISDN interface in NT mode can be used for SIP. ISDN S connection in TE mode for connecting a LANCOM Router to an external ISDN con- nection, e.g. to an NTBA or to an upstream ISDN PBX.
  • Page 39 ✔ LANCOM VPN Option with 25 active tunnels for protection of network couplings Optional hardware extensions ✔ ✔ LANCOM Modem Adapter Kit for connection of analog or GSM modems to the serial inter- face ✔ ✔ 19" rack mount adapter...

  • Page 40: Installation

    If anything is missing, please contact your retailer or the address stated on the delivery slip of the unit. System preconditions Computers that connect to a LANCOM Router must meet the following mini- mum requirements: Operating system that supports TCP/IP, e.g. Windows XP, Windows Mil- lennium Edition (Me), Windows 2000, Windows 98, Windows 95, Win- dows NT, Linux, BSD Unix, Apple Mac OS, OS/2, BeOS.

  • Page 41: Introducing Lancom Router

    46. 2.3.1 Status displays The front and the rear panels of the unit feature a series The various LANCOM Router models have different numbers of indicators on the front panel depending on their functionality. Front side The various LANCOM Router models have different numbers of indicators on the front panel depending on their functionality.
  • Page 42 The power LED flashes red/green in alternation until a configuration  password has been specified. Without a configuration password, the configuration data of the LANCOM is insecure. Under normal circum- stances, you would assign a configuration password during the basic configuration (see instructions in the following chapter). For informa-...
  • Page 43 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 2: Installation tion about a later assignment of the configuration password see the → section ’Security settings’ page 120. Flashing Power LED but no connection? LANCOM There's no need to worry if the Power LED blinks red and you can no Systems longer connect to the WAN.
  • Page 44 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 2: Installation flickering Error (CRC error, Framing error etc.) constantly on Synchronisation not succsesful, searching peer orange constantly on Synchronisation succsesful orange blinking/flash- Handshake/training phase red/ blinking Hardware error orange ¿ Connection status of first and second ISDN interface:...

  • Page 45: The Back Of The Unit

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 2: Installation Status of the four LAN ports in the integrated switch: No network device connected green constantly on Connection to network device operational, no data traffic green flickering Data traffic flickering Collision of packets Status of a VPN connection.

  • Page 46: Hardware Installation

    Hardware installation Installation of the LANCOM Router involves the following steps: LAN – first of all connect your LANCOM Router to the LAN or to an indi- vidual PC. Plug in one end of the supplied network cable (green connec- tors) to a LAN connector on the device », and the other end into an...
  • Page 47 ADSL connector cable (transparent connectors). Connection to the ISDN – to connect the LANCOM VoIP Router to the ISDN, plug in one end of the supplied ISDN cable (light-blue connectors) to an ISDN interface in TE mode. When shipped, the ISDN interfaces ⌧...

  • Page 48: Isdn Interface Configuration

    ISDN interface configuration Routers of the type LANCOM 1722 VoIP and LANCOM 1724 VoIP feature sev- eral ISDN interfaces with which they can be connected to ISDN exchange lines, or with which ISDN terminal equipment can be connected to them.

  • Page 49: Bus Termination, Life-Line Support And Power Relay

    Bus termination is generally deactivated for ISDN interfaces in TE mode. If the LANCOM VoIP Router is the last device at a longer ISDN bus and this itself is not terminated, it may be advantageous to activate the bus termi- nation for an ISDN interface in TE mode.
  • Page 50 The ISDN power relay means that the bus voltage of an external ISDN bus at ISDN 1 is switched through to the terminal equipment connected to ISDN 2 (LANCOM 1722 VoIP) and/or ISDN 3 (LANCOM 1724 VoIP). As a consequence, ISDN equipment operated at the internal ISDN bus of the LANCOM VoIP Router can be operated without its own power supply.

  • Page 51: Protocol Setting

    NT mode operation always has to be set manually. With the LANCOM  1722 VoIP, if the ISDN 2 connector is set to 'Off' there may be a con- nection to ISDN 1 in the case that the device has been set up for life- line support by means of the DIP switches.

  • Page 52: Isdn Connection Timing

    ISDN interface in TE mode can take on the timing of the ISDN line. The TE interface enables the device itself to behave like a terminal device. In NT mode, the LANCOM VoIP Router can pass on the on this timing over the ISDN interfaces to any connected terminal equipment or downstream ISDN PBXs.

  • Page 53: Starting Lancom Setup

     with computers running operating systems other than Windows. 2.6.1 Starting LANCOM setup Place the LANCOM CD in your CD drive. The LANCOM setup program will start automatically. If the setup program does not start automatically, run AUTORUN.EXE  in the root folder of the LANCOM CD.
  • Page 54 LANCAPI. The CAPI fax modem makes you available a first class fax driver. The LANCOM VPN Client enables a setting of VPN connections from a remote workstation via Internet to a router with LANCOM VPN Option. With LANCOM Online Documentation, you can copy the documenta- tion files on your PC.

  • Page 55: Basic Configuration

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 3: Basic configuration 3 Basic configuration The basic configuration can be performed on a step-by-step basis using a convenient setup wizard to guide you through the setup process and prompt you for the required information.
  • Page 56 PC is connected to the router setup of a new network Fully automatic TCP/IP configuration will not be available when integrating the LANCOM Router in an existing TCP/IP LAN. In this case, continue with the → section ’Information required for manual TCP/IP configuration’...

  • Page 57: Configuration Protection

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 3: Basic configuration Enable DHCP server? Disable the DHCP server function in the LANCOM Router if you would like to have a different DHCP server assign the IP addresses in your LAN. 3.1.2...

  • Page 58: Connect Charge Protection

    If the setup wizard does not start automatically, start a manual search  for new devices on all ports (if the LANCOM Router is connected via a serial port) or in the network (Device Find). If you cannot access an unconfigured LANCOM Router, the problem ...
  • Page 59 Step If you would like to configure the TCP/IP settings manually, assign an available address from a suitable address range to the LANCOM Router. Confirm your choice with Next. Specify whether or not the router should act as a DHCP server. Make your selection and confirm with Next.

  • Page 60: Instructions For Webconfig

    PC with activated auto-DHCP function through the name LANCOM or by its IP address 172.23.56.254. If the configuration PC does not obtain its IP address from the LANCOM DHCP server, figure out the current IP address of this PC (with Start...
  • Page 61 If a DHCP server is active in the LAN to assign IP addresses, an unconfigured LANCOM device will turn off its own DHCP server. It will change into DHCP client mode and will obtain an IP address from the DHCP server of the LAN.
  • Page 62 The setup wizards are tailored precisely to the functionality of the spe-  cific LANCOM Router. As a result, your device may offer different wiz- ards than those shown here. If you have chosen automatic TCP/IP configuration, please continue with...

  • Page 63: Tcp/Ip Settings To Workstation Pcs

    DNS server – translates network names (www.lancom.de) or names of computers (www.lancom.de) to actual IP addresses. The LANCOM Router can perform the functions of both a default gateway and a DNS server. In addition, as a DHCP server it can also automatically assign valid IP addresses to all of the computers in the LAN.
  • Page 64 Manual IP address assignment If the IP addresses in the network are assigned static ally, then for each PC the IP address of the LANCOM Router must be set in the TCP/IP configu- ration as the standard gateway and as a DNS server.

  • Page 65: Setting Up Internet Access

    All computers in the LAN can take advantage of the central Internet access of the LANCOM Router. The connection to the Internet provider can be estab- lished via any WAN connection. Internet access via ISDN can be used as a backup connection for DSL, for example.
  • Page 66 Time-based billing or flat rate – select the accounting model used by your Internet provider. When using time-based billing, you can set the LANCOM Router to automatically close existing connections if no data has been trans- ferred within a specified time (the so-called idle time).

  • Page 67: Instructions For Lanconfig

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 4: Setting up Internet access Instructions for LANconfig Highlight the LANCOM Router in the selection window. From the menu bar, select Tools Setup Wizard. From the menu, select the Setup Internet access wizard and click Next.

  • Page 68: Configuring Voice Over Ip

    The wizard will inform you as soon as the entries are complete. Close the configuration with Finish. Configuration examples The possible applications of the LANCOM VoIP Router are just as diverse as the steps required for their configuration. The following examples demon- strate the configuration of particular applications which, taken together, cover a great proportion of the possibilities.

  • Page 69: Voip Telephony For Stand-Alone Use

    Chapter 5: Configuring Voice over IP 5.2.1 VoIP telephony for stand- alone use This example shows how to configure a LANCOM which is used as a central device for Internet connectivity and VoIP telephony at a new site. SIP provider with the follow-...
  • Page 70 Enabling the ISDN interface and assigning MSNs to the internal numbers In this example, it is not necessary to configure SIP users: The SIP  users are registered at the LANCOM with the settings created in the terminal equipment (softphone and VoIP telephone). Detailed instructions on configuring the LANCOM: Under LANconfig, start the setup wizard for configuring the VoIP Call Manager.
  • Page 71 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP Enter a unique domain for the local VoIP domain which describes the local VoIP range for the site (e.g. 'mycompany.internal'). Configure the line leading to the SIP provider, for example with the name...
  • Page 72 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP remains empty, then the display name for the corresponding internal user is transmitted. Authentication name (optional): Special authentication names are not supported by all SIP providers. In many cases, the authentication name is the same as the SIP ID or the user name.
  • Page 73 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP The # sign is a placeholder for any character string. The entry '0#' is  therefore suitable for all numbers dialed that have at least one '0' pre- ceding them .
  • Page 74 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP Select the menu Settings SIP accounts / Audio and create a new SIP account with Add. Enter the following values: User ID: Internal number for the user.
  • Page 75 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP Enter the following values: Registrar: Internal VoIP domain for the LANCOM. Account: Internal number for the user. Displayname: Name of the user as it be displayed at the remote site.
  • Page 76 SIP user there. For call routing, not just the users configured in the LANCOM, but all of the users that are actu- ally registered on the Call Router are used. The SIP users can register themselves as long as they are not entered in the in the LANCOM.

  • Page 77: Using Voip Telephony To Extend The Downstream Isdn Pbx

    PBX is enhanced with VoIP telephony capability. Until now, the MSNs '11' to '13' for the ISDN connection have been used for two ISDN telephones and one analog fax. The LANCOM will now be switched between the public ISDN con- nection and the ISDN PBX.
  • Page 78 Accessing internal terminal equipment (ISDN and SIP) via the MSNs. Requirements LANCOM connected to the LAN and WAN, an ISDN NT interface is linked to the outside line exchange on the ISDN PBX. The Internet connection has been set up.
  • Page 79 When crossing from the ISDN network to the internal subscribers, the ISDN PBX converts the external MSNs to internal MSNs. When operating a LANCOM VoIP Router at the extension interface of the ISDN PBX, there is another conversion of the internal MSNs to the internal numbers of the VoIP range.
  • Page 80 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP Under LANconfig, start the setup wizard for configuring the VoIP Call Manager. Enable the options 'SIP phone system', 'ISDN phone system' and 'ISDN users'. Configure the device as described in the preceding examples:...
  • Page 81 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP The call routing table suggested by the setup wizard automatically allows ³ and ·. spontaneous outside line access for ISDN and SIP users Routes for spontaneous outside line access Entering the source line 'USER' is not visible in the screenshot.
  • Page 82 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP ³ · » This call routing table is only valid for PBX systems that forward the  special character star '*' for internal calls on their external ISDN bus.
  • Page 83 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP Call routing procedure on outgoing calls User dials correct call correct user mapping, Destination route number in line ³ VoIP tele- VoIP softphone #: 14 internal phone ³...

  • Page 84: Using Voip Telephony To Supplement Existing Isdn Telephones

    5.2.3 Using VoIP telephony to supplement existing ISDN telephones This example shows how to configure a LANCOM when the ISDN telephones used unit now are to be enhanced with VoIP telephony. The external MSNs '555 555 1' and '555 555 2' on the ISDN bus at the NTBA were used for two ISDN telephones until now.
  • Page 85 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP Requirements LANCOM connected to the LAN and WAN, an ISDN NT interface is linked to the outside line exchange on the ISDN PBX. The Internet connection has been set up.
  • Page 86 LANCOM as a call to '11'. By assigning the MSN '555 555 1' to the internal telephone number of the ISDN user '11', the call will be directed over the internal ISDN bus of the LANCOM with the target tele- phone number '555 555 1'.

  • Page 87: Connecting To An Upstream Sip Pbx

    VPN. In addition to data transfer, the telephone structure in the branch office is also connected to the central SIP PBX. A LANCOM VoIP Router is used in the branch office network and a LANCOM VPN router, for example, could act as the VPN end point at the headquarters.
  • Page 88 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP Requirements LANCOM connected to the LAN and WAN, an ISDN TE interface is linked to the ISDN NTBA. The Internet connection has been set up, as has the network connection between both of the locations by means of a VPN tunnel.
  • Page 89 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP Configure the device as described in the preceding examples: ISDN line with MSN mapping Area and country code for each location Enter a unique domain for the local VoIP domain which describes the local VoIP range for the branch office, e.g.
  • Page 90 LANCOM. The number is entered with the necessary prefixes, but without an extension number. For example, if the SIP PBX is located in London and the LANCOM is in Birmingham, then the public PBX number is '020 12345'. The call routing table suggested by the setup wizard automatically allows ³...
  • Page 91 Since registration takes place with a valid domain defined in the LANCOM, terminal devices are registered as "local users". Since the domain that is used does not correspond to the LANCOM's own VoIP domain, a simultaneous attempt is made at registering with the upstream SIP PBX. If the password used corresponds to the password stored in the SIP PBX for this user, then the registration on the SIP PBX will be successful.

  • Page 92: Voip Coupling For Locations Without A Sip Pbx

    VoIP coupling for locations without a SIP PBX Companies with widely disperse offices and without their own SIP PBX can also take advantage of VoIP site coupling. In this "Peer-to-Peer" scenario, a LANCOM VoIP Router has been implemented at both locations.
  • Page 93 External telephony via the SIP provider with backup over ISDN. Calls to emergency and special numbers via ISDN. Requirements LANCOM connected to the LAN and WAN, an ISDN TE interface is linked to the ISDN NTBA. The Internet connection has been set up, as has the network connection between both of the locations by means of a VPN tunnel.
  • Page 94 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP Configuring the LANCOM The following table provides a summary of the information required for con- figuration and where it can be entered. Basically, all that is needed is a SIP...
  • Page 95 PBX SIP domain/realm: Internal VoIP domain for the remote site. Registrar (FQDN or IP): Address for the LANCOM at the remote site, in the event that the device cannot be identified via DNS resolution of the VoIP domain (PBX SIP domain/realm).
  • Page 96 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP The call routing table suggested by the setup wizard automatically allows ³ · international and national long distance calls to be made via » remote site's line, local calls are routed via ISDN.
  • Page 97 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP ³ · After being adapted for international and national long distance, the call routing table should appear as follows: ³ · In this state, all calls that cannot be resolved by the call routing table and which do not have a corresponding entry in the local user list are auto- matically forwarded to the remote site.
  • Page 98 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP ´ ¿ This entry for 'LOCATION_B' is placed well down toward the end of  the call routing table so as not to affect the more general rules. How- ever, for interaction with the other routes, verify that only the internal numbers for the remote site are directed to the respective line.

  • Page 99: Connection Diagnosis With Lanmonitor

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 5: Configuring Voice over IP 5.2.6 Connection diagnosis with LANmonitor LANmonitor displays a wealth of information about calls switched in the LANCOM: Information about the registered users. Information about the lines available.

  • Page 100: Linking Two Networks

    6 Linking two networks With the network interconnection (also known as LAN to LAN coupling) of the LANCOM Router, two local networks are linked. The LAN to LAN coupling can be realized in principle in two different ways: VPN: For coupling via VPN, the connection between both LANs is estab- lished over a specially secured connection through the public Internet.

  • Page 101: What Information Is Necessary

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 6: Linking two networks The ISDN call back function cannot be configured using the wizard. It  can only be set up in the expert configuration. For details, please see the reference manual.
  • Page 102 The stated ISDN caller ID is used to identify and authenticate callers. When a LANCOM Router receives a call, it compares the ISDN caller ID entered for the remote station with the actual caller ID transferred via the D channel.

  • Page 103: Settings For The Tcp/Ip Router

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 6: Linking two networks The password for the ISDN connection is an alternative to the use of the ISDN caller ID. It is always used to authenticate callers that do not send an ISDN caller ID. The exact same password must be entered on both sides.

  • Page 104: Settings For The Ipx Router

    The domain can only be specified in the LANconfig wizard. In  WEBconfig, enter the appropriate information later in the expert con- figuration. For more information, see the LANCOM Router reference manual. Extranet VPN Finally, one can decide whether access to local stations is permitted. In this...

  • Page 105: Settings For Netbios Routing

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 6: Linking two networks for the higher-level WAN The IPX network numbers in the head and branch offices are specified to the respective remote sides. IPX internal net: 00020002 IPX network no.:...

  • Page 106: Instructions For Lanconfig

    After finishing the configuration of both routers, you can test the network connection. Try to contact a computer in the remote LAN (e.g. with a ping). The LANCOM Router should automatically set up a connection to the remote station and contact the required computer.
  • Page 107 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 6: Linking two networks ping). The LANCOM Router should automatically set up a connection to the remote station and contact the required computer. Ping – quick testing for TCP/IP connections To test a TCP/IP connection, simply send a ping from your computer to a computer in the remote network.

  • Page 108: Providing Dial-Up Access

    Security aspects You must, of course, protect your LAN against unauthorized access. An LANCOM Router therefore offers a whole range of security mechanisms that can provide an outstanding level of protection: VPN: Network couplings via VPN transmit data by IPSec. The data are encrypted by AES, 3-DES, Blowfish or CAST encryption algorithms.

  • Page 109: General Information

    User name and password: Users authenticate themselves with this information when dialling in. Incoming number: The LANCOM Router uses the optional ISDN caller ID as an additional user authentication. This security function should not be used when users dial in from differing locations.

  • Page 110: Settings For Tcp/Ip

    This IP address can be permanently assigned when setting up a user. However, it is simpler to let the LANCOM Router automatically assign free IP addresses to users when they dial in. In this case you only need to specify the IP address range that the LANCOM Router should use for RAS users.

  • Page 111: Settings For Ipx

    LAN. The connection is not established automatically. The RAS user must  manually establish a connection to the LANCOM Router via Dial-Up Networking first. When connected, they can search for and access computers in the remote network (via Find Computers, not through the Network Neighbourhood).

  • Page 112: Settings For The Dial-In Computer

    Internet access a VPN client ELSA offers a 30 days trial version of the LANCOM Advanced VPN Client on the LANCOM CD. A detailed description of the LANCOM Advanced VPN Client and a description of its installation can also be found on the CD.

  • Page 113: Instructions For Lanconfig

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 7: Providing dial- up access Additional TCP/IP settings: Assignment of IP address and name server address enabled 'IP header compression' disabled These settings will permit a PC to dial into a remote LAN via ISDN and access its resources in the usual manner.
  • Page 114 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 7: Providing dial- up access Configure Dial-Up Networking access on the dial-in PC as described. Next, test the connection (see box ’Ping – quick testing for TCP/IP connec- → tions’ page 107).

  • Page 115: Sending Faxes With Lancapi

    Chapter 8: Sending faxes with LANCAPI 8 Sending faxes with LANCAPI LANCAPI from LANCOM Systems is a special version of the popular CAPI inter- face. CAPI (Common ISDN Application Programming Interface) establishes the connection between ISDN adapters and communications programs. For their part, these programs provide the computers with office communications func- tions such as a fax machine or answering machine.

  • Page 116: Installation Of The Lancom Lancom Vpn

    This chapter shows the installation of CAPI Faxmodem and MS Windows fax service. Installation of the LANCOM LANCOM VPN Select the entry Install LANCOM software in the setup program of your LANCOM CD. Highlight the option CAPI Faxmodem, click Next and follow the instruc-...

  • Page 117: Installation Of The Ms Windows Fax Service

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 8: Sending faxes with LANCAPI When the installation was successful, the CAPI Faxmodem is entered into the Phone and Modem Options of the control panel. Installation of the MS Windows fax service Select the option Printers and Faxes from the control panel.

  • Page 118: Sending A Fax

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 8: Sending faxes with LANCAPI For checking the installation, click with the right mouse button on the fax-icon and select Properties. The CAPI Faxmodem should now be entered into register 'devices'. Sending a fax After installing all required components, you have several possibilities to send a fax from your workstation PC.
  • Page 119 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 8: Sending faxes with LANCAPI The fax client console will open. Select the menu item Send a Fax. A wiz- ard will assist you through the remaining sending process.

  • Page 120: Security Settings

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 9: Security settings 9 Security settings Your LANCOM Router has numerous security functions. You find in this chap- ter all information you need for an optimal protection. The security settings wizard Access to the configuration of a device permits not only to read out critical information such as WEP key or Internet password.

  • Page 121: Wizard For Webconfig

    The firewall wizard assists you to create new firewall rules quickly and com- fortably. Please find further information about the firewall of your LANCOM Router and about its configuration in the reference manual. 9.2.1...

  • Page 122: Configuration Under Webconfig

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 9: Security settings Mark your LANCOM Router in the selection window. Select from the com- mand bar Extras Setup Wizard. Select in the selection menu the setup wizard Configuring Firewall and confirm your choice with Next.
  • Page 123 LANconfig in the 'Management' configuration area on the 'Security' tab. Have you activated the Firewall? The Stateful Inspection Firewall of the LANCOM ensures that your local network cannot be attacked from the outside . The Firewall can be ena- bled in LANconfig under ’Firewall/QoS’ on the register card ’General’.
  • Page 124 'General' tab. Have you closed critical ports with filters? The firewall filters of the LANCOM Router devices offer filter functions for individual computers or entire networks. Source and target filters can be set for individual ports or for ranges of ports. In addition, individual pro- tocols or any combinations of protocols (TCP/UDP/ICMP) can be filtered.
  • Page 125 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 9: Security settings The device's operation can be protected by various means; for example, it will cease to function if there is an interruption to the power supply, or if the device is switched on in another location.

  • Page 126: Troubleshooting

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 10: Troubleshooting 10 Troubleshooting In this chapter, you will find suggestions and assistance for a few common dif- ficulties. 10.1 No WAN connection is established After start-up the router automatically attempts to connect to the access pro- vider.

  • Page 127: Unwanted Connections Under Windows Xp

    A cabling defect might have occurred, if no data is transmitted over LAN or WAN connection, although the configuration of the devices does not show any discernible errors. You can test the cabling with the built-in cable tester of your LANCOM. Change under WEBconfig to menu item Expert configuration Status LAN statistics Cable test.
  • Page 128 LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 10: Troubleshooting tested (e.g. “DSL1” or “LAN-1”). Pay attention to the correct spelling of the interfaces. Start the test for the specified interface by clicking on Execute. Change then to menu item Expert configuration...

  • Page 129: Appendix

    Default: 2x NT, 2x TE (S Bus termination for each interface switchable by DIP switch. Outband serial V.24/V.28 port (8 pol. mini DIN), in combination with LANCOM modem adapter kit suited for connection of external analogue or GSM modems Power supply...

  • Page 130: Contact Assignment

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 11: Appendix 11.2 Contact assignment 11.2.1 ADSL interface 6-pin RJ45 socket Connector – – – – 11.2.2 ISDN 1 interface 8-pin RJ45 socket, corresponding to ISO 8877, EN 60603-7, wired as ISDN TE...

  • Page 131: Isdn 2 Interface

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 11: Appendix 11.2.3 ISDN 2 interface 8-pin RJ45 socket, corresponding to ISO 8877, EN 60603-7, wired as ISDN NT for direct connection to ISDN terminal equipment Steckverbindung Leitung – – – –...

  • Page 132: Configuration Interface (Outband)

    LANCOM 1722 VoIP – LANCOM 1724 VoIP Chapter 11: Appendix 11.2.5 Configuration interface (Outband) 8-pin mini-DIN socket Connector Line 11.3 CE declaration of conformity The CE declarations of conformity for LANCOM routers are available for down- load on the LANCOM web site (www.lancom.de).
  • Page 133 LANCOM 1722 VoIP – LANCOM 1724 VoIP Index Index Numerics Configuration protection 10/100Base-TX Connect charge protection 3-DES Connect-charge budget Connect-charge metering Contact assignment Accounting ADSL interface ADSL Configuration interface Connect Ethernet interface Connector cable LAN interface Transmission rates Outband ADSL modem...
  • Page 134 LANCOM 1722 VoIP – LANCOM 1724 VoIP Index Frame type Internal-Net-Number Firewall IPX conventions Firewall filter IPX router FirmSafe Settings Flat rate ISDN caller ID Connect charge information Hardware installation Connector cable D channel ICMP data compression Installation Dial-in number...
  • Page 135 LANCOM 1722 VoIP – LANCOM 1724 VoIP Index Configuring the dial-in computer 112 MAC address filter Enable software compression Minimum bandwidth NetBIOS Multiple subscriber number Searching for Windows workgroups Security aspects NAT – see IP masquerading Server NetBIOS setup NetBIOS proxy...
  • Page 136 LANCOM 1722 VoIP – LANCOM 1724 VoIP Index VoIP Online Automatic outside line access Power Connecting subsidiaries or home offices WAN status Downstream PBX Switch Internal numbers System preconditions Local registration Outside line access Peer-to-peer SIP proxy TCP/IP Spontaneous outside line access...

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