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ELTEX TAU-8N.IP User Manual

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VoIP Gateway
TAU-8N.IP
User Manual
Firmware version 1.4.0
MGMT IP address: 192.168.1.1
Username: admin
Password: password

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Summary of Contents for ELTEX TAU-8N.IP

  • Page 1 VoIP Gateway TAU-8N.IP User Manual Firmware version 1.4.0 MGMT IP address: 192.168.1.1 Username: admin Password: password...

  • Page 2: Table Of Contents

    TAU-8N.IP User Manual. Version 1.4.0. Contents INTRODUCTION ..................................5 PRODUCT DESCRIPTION ..............................6 1.1. Purpose ................................. 6 1.2. Device Specification .............................. 6 1.3. Device Design and Operating Principle ......................... 7 1.4. Main Specifications ............................... 9 1.5. Design ................................. 11 1.6.
  • Page 3 TAU-8N.IP User Manual Document version Issue date Revisions Version 4.0 28 April 2023 Fourth issue Version 3.0 30 September 2022 Third issue Version 2.0 10 June 2022 Second issue Version 1.0 18 December 2020 First issue Firmware version Firmware version 1.4.0...

  • Page 4: Introduction

    TAU-8N.IP User Manual INTRODUCTION Today, VoIP is one of the most rapidly evolving telecommunication services. TAU-8N.IP series gateways (hereinafter the "device") are designed to provide VoIP services to the network clients. TAU-8N.IP VoIP gateway allows connecting analogue phones to packet-based data networks accessible via Ethernet.

  • Page 5: Product Description

    1. PRODUCT DESCRIPTION 1.1. Purpose TAU-8N.IP is a high-performance VoIP gateway with the full set of features that allow users to take advantage of VoIP functionality. TAU-8N.IP gateway allows connecting an analogue phone or a fax modem to IP networks.

  • Page 6: Device Design And Operating Principle

    • TR-069; • remote monitoring, configuration and setup: web interface, Telnet, SSH. Figure 1 shows TAU-8N.IP connection diagram. Figure 1 — TAU-8N.IP connection diagram 1.3. Device Design and Operating Principle TAU-8N.IP terminal includes the following subsystems: • controller that includes: •...
  • Page 7 TAU-8N.IP User Manual Block diagram of the device is shown in Figure Figure 2 — TAU-8N.IP block diagram The device is running the Linux operating system. Basic control functions are performed by productive processor which enables IP packet routing, VoIP operation, etc.

  • Page 8: Main Specifications

    TAU-8N.IP User Manual Fig. 3 shows TAU-8N.IP functional diagram. Figure 3 — TAU-8N.IP functional diagram 1.4. Main Specifications Table 1 shows main device specifications. Table 1 — Main specifications VoIP protocols Supported protocols Voice codecs Codecs G.729, annex A, annex B, G.711 a, G.711u, G.723.1, G.726-16, G.726-24, G.726-32, G.726-40, AAL2-G.726-16,...
  • Page 9 TAU-8N.IP User Manual Analogue user port specifications Number of ports Loop resistance (phone resistance included) up to 1800 Ω Dialing reception pulse/frequency (DTMF) Caller ID broadcasting FSK BELL 202/FSK V.23/DTMF Control Remote control web interface, Telnet, SSH, TR-069 Access restriction...

  • Page 10: Design

    TAU-8N.IP User Manual 1.5. Design TAU-8N.IP subscriber gateway is enclosed into 208 × 38 × 115 mm plastic housing. 1.5.1. Front Panel of the Device The TAU-8N.IP front panel appearance is shown in Figure Figure 4 — TAU-8N.IP front panel appearance Table 2 —...
  • Page 11 TAU-8N.IP User Manual 1.5.2. Rear Panel of the Device The TAU-8N.IP rear panel appearance is shown in Figure Figure 5 — TAU-8N.IP rear panel appearance Table 3 — Description of the rear panel indicators and controls Rear panel element Description...

  • Page 12: Light Indication

    TAU-8N.IP User Manual 1.6. Light Indication WAN, MGMT, Phone, USB, Power, Status indicators located on TAU-8N.IP front panel show the device current status. Table 4 lists possible states of the LEDs. Table 4 — Light indication of TAU-8N.IP states Indicator...

  • Page 13: Reset To Factory Settings

    MGMT interface address — 192.168.1.1; • subnet mask — 255.255.255.0; • user name/password for web interface access: admin/password. • 1.8. Delivery Package TAU-8N.IP standard delivery package includes: TAU-8N.IP VoIP gateway; • 220/12 V, 2.0 A power adapter; • Installation and configuration guide. •...

  • Page 14: Device Management Via Web Configurator

    Submenu). The current version of the firmware can be obtained on the Download Center page on the official website of the company or by contacting the ELTEX Service Center. For technical support contacts and useful links, see the Technical Support section on the last page of this manual.

  • Page 15: User Change

    2.3. Web Interface Operation Modes TAU-8N.IP web interface can operate in three modes: • Monitoring — system monitoring mode — is used to view device operation information: network connection availability, phone port state, amount of data received/transferred via network interfaces, etc.;...

  • Page 16: Applying And Discarding Changes Made To Configuration

    TAU-8N.IP User Manual 2.4. Applying and Discarding Changes Made to Configuration 2.4.1. Applying Configuration Click the 'Apply' button to save the configuration into the device flash memory and apply new settings. All settings will be applied without device restart. The 'Apply' button in the quick configuration menu and the advanced settings menu will appear as follows: Web interface visual indication of the current status of the setting application process is described in Table 5: Table 5 —...

  • Page 17: Quick Configuration Menu

    TAU-8N.IP User Manual 2.5. Quick Configuration Menu In the quick configuration menu, basic device settings are displayed, see Figure Figure 6 — Quick configuration menu Settings are divided into the following tiles: • Internet — quick Internet access configuration; • VoIP — quick VoIP configuration;...
  • Page 18 TAU-8N.IP User Manual • 67 — firmware file name (to download via TFTP from the server specified in Option 66); • 82 — DHCP Relay agent information; • 120 — SIP server outbound; • 121 — classless static routes. In Option 60 DHCP request, the device will send vendor information in the following format: [VENDOR:vendor][DEVICE:device type][HW:hardware version][SN:serial number] [WAN:WAN interface МАС...
  • Page 19 TAU-8N.IP User Manual 2.5.2. VoIP For VoIP operation, you should specify settings in the 'VoIP' tile. To specify additional parameters, go to advanced settings mode by clicking the 'more' link. In the tabs ‘Line 1’ – ‘Line 8’ you may configure the device phone ports ‘Phone 1’ – ‘Phone 8’ respectively: •...

  • Page 20: Advanced Settings

    TAU-8N.IP User Manual 3.6. Advanced Settings To proceed to the advanced settings mode, click 'more' link in any title heading or select 'Preferences' item on the left panel. 3.6.1. Web Interface Basic Elements Figure 7 shows web configurator basic navigation elements in the advanced settings mode.
  • Page 21 TAU-8N.IP User Manual 3.6.2. 'Network' Menu In the 'Network' menu, you may configure the device network settings. 3.6.2.1. 'Internet' Submenu In the ‘Internet’ submenu, you may configure an external network (via PPPoE, DHCP, L2TP and statically) and management interface. Common Settings •...
  • Page 22 TAU-8N.IP User Manual • Automatically Switch to Reserve Channel — connection to the Internet is established via the primary channel (defined below in the 'Primary Channel' field), and in case of loss of access to the Internet via the main channel, an automatic transition to the reserve channel will be made.
  • Page 23 TAU-8N.IP User Manual • Alternative Vendor ID (Option 60) — when checked, the device transmits value from Vendor ID (Option 60) field in Option 60 DHCP messages (Vendor class ID). If the field is empty, Option 60 will not be transmitted in DHCP messages.
  • Page 24 TAU-8N.IP User Manual • Use the Secondary Access for VoIP — this option is available, if there are no dedicated interfaces for VoIP service ('Use Internet Settings' checkbox is selected). When the checkbox is not selected (default value), VoIP service uses PPP interface for its operation;...
  • Page 25 TAU-8N.IP User Manual When '3G/4G USB Modem' connection method is selected, the following fields will be available for configuration: • Mobile provider — 3G/4G service provider name. You may select one of the six mobile service providers operating in Russian Federation (their settings are stored in the device memory): Megafon, Beeline, MTS, Skylink, Tele2, Yota.
  • Page 26 TAU-8N.IP User Manual When 'Automatically Switch to Reserve Channel' connection method is selected, the following settings will be available for configuration: Primary channel — select the type of the primary channel from the drop-down list: • Wired — channel via the Ethernet WAN port of the device;...
  • Page 27 TAU-8N.IP User Manual Checking the Access to the Internet • Server Response Timeout, ms — time during which a response from the PING server is expected; • Number of Attempts to Access the Server — maximum amount of attempts to access a PING server, after which it will be decided to switch to the redundant channel;...
  • Page 28 TAU-8N.IP User Manual • Enable — allow using IPSec for data encryption; • Interface — this setting takes effect only when PPPoE, PPTP or L2TP are selected for the Internet, and defines the interface that will be accessed with IPSec: Ethernet (secondary access interface) or PPP (primary access interface).
  • Page 29 TAU-8N.IP User Manual • NAT-Traversal IPSec — NAT-T mode selection. NAT-T (NAT Traversal) encapsulates IPSec traffic and simultaneously creates UDP packets to be sent correctly by a NAT device. For this purpose, NAT-T adds an additional UDP header before IPSec packet so it would be processed as an ordinary UDP packet and the recipient host would not perform any integrity checks.
  • Page 30 TAU-8N.IP User Manual 3.6.2.2. 'MAC Management' Submenu In the 'MAC management' submenu, you may change the device WAN interface MAC address. • Redefine МАС — when checked, MAC address from the MAC field is used on WAN interface. To redefine MAC on the WAN interface, enter the required MAC address in the MAC field.
  • Page 31 TAU-8N.IP User Manual Configuration of firewall rules To add a new rule, click the 'Add' button and fill in the following fields in the 'Add a New Rule' window: • Name — rule name; • Traffic Type — select the traffic type that will fall under this rule: •...
  • Page 32 TAU-8N.IP User Manual 3.6.2.4. 'ACL' Submenu In the 'ACL' submenu you may configure access lists. ACL (Access Control List) contains rules that determine traffic flow through the interface. 3.6.2.5. Limitations on MAC Addresses To add a new rule, click the 'Add' button and fill in the following fields in the 'Add a New Rule' window: •...
  • Page 33 TAU-8N.IP User Manual 3.6.2.6. Time Limits on Schedule To add a new rule, click the 'Add' button and fill in the following fields in the 'Add a New Rule' window: • Enable — when checked, a filtering rule is enabled and disabled at the scheduled time;...
  • Page 34 TAU-8N.IP User Manual List of MAC Addresses You may enter up to 30 client MAC addresses which may access the device in accordance with the specified filtering mode. To add a new client to the list, click the 'Add' button and enter its MAC address.
  • Page 35 TAU-8N.IP User Manual 3.6.3. 'VoIP' Menu In the 'VoIP' menu, you may configure VoIP (Voice over IP): SIP configuration, FXS interface configuration, installation of codecs, dialplan, fax and modem data transfer methods. 3.6.3.1. 'Network Settings' Submenu In the VoIP 'Network Settings' submenu, you may specify custom network settings for VoIP service are specified.
  • Page 36 TAU-8N.IP User Manual • DHCP — operation mode where IP address, netmask, DNS address and other necessary settings for service operation (e.g. SIP and registration server static routes) are automatically obtained from DHCP server. If you are unable to obtain DNS server addresses from the provider, you may specify them manually using '1st DNS Server' and '2nd DNS Server' fields.
  • Page 37 TAU-8N.IP User Manual 3.6.3.2. "QoS" Submenu In the 'QoS' submenu, you may configure Quality of Service (QoS) functions. RTP Port Range Configuration • Min RTP Port — the lower limit of the RTP port range used for voice traffic transmission;...
  • Page 38 TAU-8N.IP User Manual 3.6.3.3. 'Line Settings' Submenu In the 'Line settings' submenu, you may configure the phone ports Phone 1–8. To edit settings, press the left mouse button on the link with the number of adjustable line and fill the...
  • Page 39 TAU-8N.IP User Manual Account Settings • Enable — when checked, port is active; • SIP profile — select SIP profile from the list of available profiles. To configure profiles, use the 'VoIP' → 'Profiles' menu. • Phone — subscriber number assigned to the phone port;...
  • Page 40 TAU-8N.IP User Manual • CFU (Call Forward Unconditional) — when checked, CFU service is enabled — all incoming calls will be forwarded to the specified call forward unconditional number. When checked, fill in the following fields: • CFU Number — number that all incoming calls will be forwarded to when Call forward unconditional service is enabled (in SIP profile being used, a prefix for this direction should be defined in the dialplan);...
  • Page 41 TAU-8N.IP User Manual • Caller ID generation — select the Caller ID mode. For Caller ID operation, subscriber's phone unit must support the selected method: • Off — Caller ID is disabled; • FSK V.23, FSK Bell 202 — FSK Caller ID method (using Bell202 standard, or ITU-T V.23). The number is served between the first and second ringing tones by a stream of data with a frequency modulation;...
  • Page 42 TAU-8N.IP User Manual 3.6.3.4. 'SIP profiles' Submenu In the 'SIP Profiles' submenu, you may configure device SIP profiles. You can assign custom SIP and registration server addresses, voice, fax codecs, individual dialplan and other parameters for every SIP profile. Various SIP profiles usage is needed when various subscriber ports operating via various connection directions (SIP servers).
  • Page 43 TAU-8N.IP User Manual The gateway may operate with a single main SIP proxy and up to 4 redundant SIP proxies. For exclusive operation with the main SIP-proxy, 'Parking' and 'Homing' modes are identical. In this case, if the main SIP‑proxy fails, it will take time to restore its operational status.
  • Page 44 TAU-8N.IP User Manual Reserved proxy Click the 'Add' button to add the redundant SIP proxy and execute the following settings: • Proxy Server — redundant SIP server network address. You may specify IP address as well as the domain name (specify SIP server UDP port after the colon (:), default value is 5060);...
  • Page 45 • Public IP Address — this parameter is used as device's external address while working on NAT (on gateway). This parameter is used as a public address of gateway (NAT) WAN interface on which TAU-8N.IP is set up. Wherein it is needed to traverse corresponding SIP and RTP ports, used by device, on the gateway (NAT);...
  • Page 46 TAU-8N.IP User Manual Setting operation for incoming communications: Supported, Required — when the following tag is received in 'INVITE' request — supported: 100rel, or required: 100rel, perform reliable transfer of provisional replies. If there is no supported: 100rel tag in INVITE request, the gateway will perform unreliable transfer of provisional replies;...
  • Page 47 TAU-8N.IP User Manual Dialplan Dialplan is set with regular expressions in the 'Dialplan Configuration' field. The structure and format of regular expressions that enable different dialing features are listed below. Regular expression structure: Sxx, Lxx( ), where: xx - random values of S and L timers;...
  • Page 48 TAU-8N.IP User Manual Settings that affect dialplan processing: • Interdigit Long Timer ('L' digit in dialplan entry) — entry timeout for the next digit, if there are no template that correspond to the dialed combination; • Interdigit Short Timer ('S' digit in dialplan entry) — entry timeout for the next digit. If the dialed combination fully corresponds to at least one template and if there is at least one template that requires an extension dialing for the full matching.
  • Page 49 TAU-8N.IP User Manual • Example 6: (*5x*xxxx*x#|*2x*xxxxxxxxxxx#|#xx#|[2-7]xxxxx|8, [2-9]xxxxxxxxx|8, 10x.| 1xx<:@10.110.60.51:5060>). • Example 7: (1xx|0[1-9]|00[1-8]|* 5x*xxxx*x#|*2x*xxxxxxxxxxx#|#xx#|[2-7]xxxxx|8, [2-9]xxxxxxxxx|8, 10x.). Sometimes it is needed to perform calls locally within the device. In so doing, if device IP address is unknown or periodically changing, it is convenient to use reserved '{local}' word as server address; it means that device will transmit related number sequence to own device address.
  • Page 50 TAU-8N.IP User Manual Alternative voice codecs can be set for the selected direction. There is ability of preferred codec setting for voice transmission for every direction in dialplan. Configuration is made in dialplan. Additional codec settings are indicated in parentheses after the word «codecs:» for every direction.
  • Page 51 TAU-8N.IP User Manual Fax transfer Fax transfer may be carried out using voice codec G.711A and G.711U or special codec for facsimile messages T.38 transmission. T.38 is a standard for sending facsimile messages in real time over IP networks. Signals and data sent by the fax unit are encoded into T.38 protocol packets.
  • Page 52 • Sending Interval — RTCP packets sending interval, sec; • Receiving Period — RTCP message receiving period is measured in sending interval units; if receiving period expires and there is no any RTCP packet received from oncoming side — TAU-8N.IP cuts the connection off;...
  • Page 53 TAU-8N.IP User Manual • SRTP — when checked, RTP stream encryption will be used. In this case the RTP/SAVP profile will be specified in the SDP of outgoing INVITE requests. Also, an RTP/SAVP profile will be searched in the SDP of incoming requests.
  • Page 54 TAU-8N.IP User Manual Edit Dialplan Profile Click the profile number to execute the following settings: Codecs: • Codec 1...7 — enables you to select codecs and an order of their usage. Codec with the highest priority should be placed in 'Codec 1' field. For operation, you should specify at least one codec: •...
  • Page 55 TAU-8N.IP User Manual Fax and Modem Transfer: • Modem Transfer — selection of the codec, that will be used for data transmission when modem signals detecting by the gateway: • G.711a VBD — use G.711a codec in VBD mode; • G.711u VBD — use G.711u codec in VBD mode;...
  • Page 56 TAU-8N.IP User Manual Jitter Buffer: • Min Delay, ms — minimum expected time of IP packet spread through network; • Max Delay, ms — maximum expected time of IP packet spread through network; • Jitter Factor — parameter, used for jitter buffer size optimization. It is recommended to set its value to 0.
  • Page 57 TAU-8N.IP User Manual • Group Name — the name of the hunt group. • Status — the status of the hunt group: enabled/ disabled; • SIP Profile — SIP profile, used by the hunt group; • Phone — hunt group phone number;...
  • Page 58 TAU-8N.IP User Manual • Username — user name for authentication on SIP server; • Password — password for authentication on SIP server; • SIP Port — alternative SIP port for group (default is 5060); • Group Type — the type of the hunt group: •...
  • Page 59 TAU-8N.IP User Manual Service usage: The call comes in to the phone unit of a subscriber that belongs to the pickup group. If subscriber cannot answer the call, another subscriber that belongs to that group and uses the same SIP profile may answer the incoming call.
  • Page 60 TAU-8N.IP User Manual Subscriber service management • Supplementary Services — list of supplementary services: • CFU — forwards all subscriber's incoming calls to specified number; • CFB — forwards all subscriber's incoming calls to specified number when they are busy;...
  • Page 61 TAU-8N.IP User Manual To add a signal, click the 'Add' button and execute the following settings: • Cadence Name; • Cadence — length of the ringing voltage sending to a subscriber set and length of the pause between call signals, both values should be divisible by 100, min value is 200 ms, max is 8000 ms.
  • Page 62 TAU-8N.IP User Manual 3.6.4. 'System' Menu In the 'System' menu you can configure system, time, device access via different protocols, change password and update device firmware. 3.6.4.1. 'Time' Submenu In the 'Time' submenu you can configure time synchronization protocol (NTP).
  • Page 63 TAU-8N.IP User Manual 3.6.4.2. 'Access' Submenu In the 'Access' submenu you can configure the access to device via web interface, Telnet and SSH. Access Ports In this section you can configure TCP ports for access to the device via HTTP, HTTPS, Telnet, SSH.
  • Page 64 TAU-8N.IP User Manual Access to 'Internet' Service To access the device via Internet service interfaces set the following permissions: Web: External network and Management interface: • HTTP — when checked, the WAN port connection to the device web configurator is enabled via HTTP (insecure connection);...
  • Page 65 TAU-8N.IP User Manual 3.6.4.3. 'Log' Submenu The 'Log' submenu is intended for configuring the output of various kinds of debug messages of the system in order to detect the causes of problems in the device operation. Debug information may be obtained from the following software modules of the device: •...
  • Page 66 TAU-8N.IP User Manual VoIP Log Type of messages that output to VoIP log is configured below: • Error — check the box if it is needed to output 'Error' type messages; • Warning — check the box if it is needed to output 'Warning' type messages;...
  • Page 67 TAU-8N.IP User Manual 3.6.4.4. 'WEB Authentication' Submenu In the 'WEB Authentication' submenu you can set passwords for access by administrator, unprivileged user and viewer. Set passwords are used for device access via web interface and also via Telnet and SSH protocols.
  • Page 68 TAU-8N.IP User Manual 3.6.4.5. 'Configuration Management' Submenu In the 'Configuration Management' submenu you can save and update current configuration. • Backup Configuration — to save the current device configuration to a local computer click the 'Download' button. • Restore Configuration — selection of configuration file saved on local computer. To update the device configuration click the 'Select file' button, specify a file (in .tar.gz format) and click the 'Upload' button.
  • Page 69 TAU-8N.IP User Manual If the ID of the active firmware version and the backup version are different, the system will automatically overwrite the backup version with the active firmware version after 10 minutes. Up to this point, the firmware versions can be switched between each other.
  • Page 70 TAU-8N.IP User Manual 3.6.4.8. The 'Autoprovisioning' Submenu The 'Autoprovisioning' submenu configures the DHCP-based autoprovisioning algorithm and the automatic configuration protocol of the subscriber devices TR-069. DHCP-based Autoprovisioning • Parameters Priority from — this parameter determines where you need to get the names and location of configuration files and firmware: •...
  • Page 71 TAU-8N.IP User Manual • Configuration File — the full path to the firmware file is specified in the URL format (at the moment it is possible to download the software file using TFTP and HTTP): tftp://<server address>/<full path to cfg file>...
  • Page 72 <port> (<address> is ACS server IP address or domain name, <port> is ACS server port, the default port is 80). In the second case, the client will use the secure HTTPS protocol to exchange information with the ACS server. Eltex ACS server defaults to port 9595 for communication;...
  • Page 73 TAU-8N.IP User Manual NAT Settings: If there is a NAT (network address translation) between the client and ACS server, ACS server may not be able to establish the connection to client without specific technologies intended to prevent such situations. These technologies allow the client to identify its so called public address (NAT address or in other words external address of a gateway, that covers the client).
  • Page 74 TAU-8N.IP User Manual Root Certificate The root certificate is used to authenticate certificates for incoming connections. This certificate must be signed by the authorization center. Certificate: • Serial Number — serial number of the chosen certificate; • Not valid before — certificate start date;...
  • Page 75 TAU-8N.IP User Manual Certificate Client The client certificate is used for outgoing SIP connections using TLS. Certificate: • Serial Number — serial number of the chosen certificate; • Not valid before — certificate start date; • Not valid after — certificate end date.
  • Page 76 TAU-8N.IP User Manual Web Certificate The web certificate is used when accessing the device’s web configurator via the HTTPS protocol. Certificate: • Serial Number — serial number of the chosen certificate; • Not valid before — certificate start date; • Not valid after — certificate end date.

  • Page 77: System Monitoring

    TAU-8N.IP User Manual 3.7. System Monitoring To switch to the 'System Monitoring' mode select 'Monitoring' on the left panel. Some pages do not automatically update device monitoring data. To get current information, click the 'Refresh' button. 3.7.1. 'Internet' Menu In the 'Internet' menu you can view common network settings of the device.
  • Page 78 TAU-8N.IP User Manual 3.7.2. 'VoIP' Menu In the 'VoIP' menu you can view the state of the VoIP network interface, monitor subscriber sets and hunt group registration status, test lines. Status of VoIP Network Interface • IP Address — IP address for VoIP service network interface.
  • Page 79 TAU-8N.IP User Manual • Line State — physical line state. The line can be in one of the following states: • Inactive — the handset is off hook (or subscriber port is disabled), normal work; • Active — the handset is on hook; a station response signal is output to the line, either a ringback tone or an error signal, or the line is in a conversation state;...
  • Page 80 TAU-8N.IP User Manual Example of Line 1 test result: Under the FXS Status table there are buttons for compulsory registration or unregistration of selected lines. Hunt Groups Status • Group Name — the name of the hunt group. • State — the status of the hunt group: enabled or disabled;...
  • Page 81 TAU-8N.IP User Manual 3.7.3. 'Ethernet Ports' Menu In the 'Ethernet Ports' menu, you can view the state of the device Ethernet ports. State of Ethernet ports • Port — port name: • WAN — external network port; • MGMT — a port for device management.
  • Page 82 TAU-8N.IP User Manual 3.7.5. 'Device' Menu The 'Device' menu contains common information about the device. Device Info • Product — device model name; • Firmware Version — device firmware version; • Factory MAC Address — device WAN interface MAC address, set by manufacturer;...
  • Page 83 TAU-8N.IP User Manual 3.7.6. 'CPU' Menu The 'CPU' menu displays data on CPU usage. CPU Usage • IRQ — percentage of CPU time spent on processing of hardware interruptions; • System — percentage of CPU time utilization by core processes;...
  • Page 84 TAU-8N.IP User Manual 3.7.7. 'Routes' Menu In the 'Routes' menu, you can view the device routing table. • Destination — IP address of destination host or subnet that the route is established to; • Gateway — gateway IP address that allows for the access to the Destination;...
  • Page 85 TAU-8N.IP User Manual 3.7.8. 'Call History' Menu In the 'Call History' menu, you can view a list of completed phone calls, as well as a summary of each call. Device RAM may store up to 10 000 performed calls records. When the number of records exceeds 10 000, the oldest records will be deleted, and the new ones will be added at the end of the file.
  • Page 86 TAU-8N.IP User Manual Click button to proceed to the first record of the call history table. Click button to proceed to the previous page of the call history table. Click button to proceed to the next page of the call history table.

  • Page 87: Example Of Device Configuration

    TAU-8N.IP User Manual 3.8. Example of device configuration Connect the PC to the device's MGMT port, connect the wire from the provider's network to the WAN port; Enter the IP address of the gateway in the browser address bar (by default 192.168.1.1);...
  • Page 88 TAU-8N.IP User Manual In the 'VoIP' tile subscriber lines are quickly configured for operation via SIP. To do this, select 'Line' number required for configuring. Check the 'Enable' box, enter phone number assigned to the current line, user name and password for SIP server authorization. To save and apply settings, click The subscriber lines in another 'Line' tabs are configured the same way.

  • Page 89: Supplementary Service Usage

    TAU-8N.IP User Manual 4. SUPPLEMENTARY SERVICE USAGE 4.1. Call Transfer 'Call transfer' service may be performed locally using gateway resources, or remotely using resources of a communicating device. If the service is performed using resources of a communicating device, the access to 'Call transfer' service is established via subscriber port settings menu —...
  • Page 90 TAU-8N.IP User Manual The figure below shows an algorithm of 'Attended calltransfer' service operation:...

  • Page 91: Call Waiting

    'Local Calltransfer' service allows to transfer the call within the gateway without external REFER message sending in case when Subscriber C is local TAU-8N.IP subscriber and call was made directly, without proxy server. If subscriber C is external or local subscriber, but has been called using proxy server, 'Local Calltransfer' service works the same way as 'Attended Calltransfer', i.e.

  • Page 92: Three-Party Conference

    TAU-8N.IP User Manual 4.2. Three-party Conference Three-party conference is a service, that enables simultaneous phone communication for 3 subscribers. For entering conference mode press R3 (see Section 'Call Transfer'). Subscriber that started the conference is deemed to be its initiator, two other subscribers are the participants.
  • Page 93 TAU-8N.IP User Manual 4.2.2. Remote Conference Remote conference operates according to the algorithm, described in RFC4579. The feature of the algorithm is that the initiator subscriber establishes a connection with the conference server (also called focus) by pressing flash + 3, and then requests for focus to establish a connection with two other conference...

  • Page 94: Connection Establishment Algorithms

    TAU-8N.IP User Manual 5. CONNECTION ESTABLISHMENT ALGORITHMS 5.1. Algorithm of a Successful Call via SIP Protocol SIP is a session initiation protocol, that performs basic call management tasks such as starting and finishing session. SIP defines 3 basic connection initiation scenarios: between users, involving proxy server, involving forwarding server.

  • Page 95: Call Algorithm Involving Sip Proxy Server

    TAU-8N.IP User Manual 5.2. Call Algorithm Involving SIP Proxy Server This section describes a connection initiation scenario between two gateways involving SIP proxy server. In this case, caller gateway (Subscriber A) should know subscriber's permanent address and proxy server IP address.

  • Page 96: Call Algorithm Involving Forwarding Server

    TAU-8N.IP User Manual 5.3. Call Algorithm Involving Forwarding Server This section describes a connection initiation scenario between two gateways involving forwarding server. In this case, caller gateway (Subscriber A) establishes connection unassisted, and the forwarding server only translates callee permanent address into its current address. Subscriber obtains forwarding server address from the network administrator.

  • Page 97: Dhcp-Based Autoprovisioning Algorithm

    • $SN – Serial number — instead of this macro, the device inserts its own serial number in the file URL; • $PN – Product name — instead of this macro, the device inserts its product name (e.g. TAU-8N.IP) in the file URL;...
  • Page 98 TAU-8N.IP User Manual URL examples: tftp://download.server.loc/firmware.file, http://192.168.25.34/configs/tau8n/my.cfg, tftp://server.tftp/$PN/config/$SN.cfg, http://server.http /$PN/firmware/$MA.frm, etc. It is allowed to omit some URL parameters. For example, the configuration file can be specified in this format: http://192.168.18.6/ config_tau8n.cfg If it is impossible to extract all the parameters required for downloading the file from the configuration or...
  • Page 99 TAU-8N.IP User Manual Option 43 format (Vendor specific info) 1|<acs_url>|2|<pcode>|3|<username>|4|<password>|5|<server_url>|6|<config.file>|7| <firmware.file>|9|<manifest.file> 1 — autoconfiguration by TR-069 protocol server address code; 2 — code for 'Provisioning code' parameter; 3 — code for username for authorization on TR-069 server code; 4 — password for authorization on TR-069 server code;...
  • Page 100 TAU-8N.IP User Manual Do not turn off the power or overload the device while saving the image to flash-memory. These actions will lead to a partial recording of firmware, which is equivalent to damage to the boot partition of the device. If this happens, restore the device power, and it boot from the backup firmware image.

  • Page 101: System Recovery After A Firmware Update Failure

    TAU-8N.IP device should start; 5. If the file transfer process has begun — wait for it to finish, after which the TAU-8N.IP will record the firmware to the memory and automatically start the system. The recording time is about 5 minutes. The successful recovery of the device is indicated by the orange or green color of the 'Power' indicator.

  • Page 102: Appendix A. Calculation Of Phone Line Length

    TAU-8N.IP User Manual 7. APPENDIX A. CALCULATION OF PHONE LINE LENGTH Table A1 — Electrical resistance/ cable core diameter relationship for 1 km of DC subscriber cable lines at ambient temperature +20 °С. Line length Line length Electrical resistance of 1...

  • Page 103: Appendix B. Running User-Defined Script Upon System Startup

    Periodically, it is necessary to perform certain actions at device startup, which cannot be performed by specifying certain settings via the configuration file. For this case, TAU-8N.IP device provides the ability to configure the startup of a user-defined script through the configuration file, in which you can put any desired sequence of commands.

  • Page 104: Appendix C. Dhcp Clients Configuration In Multiservice Mode

    9. APPENDIX C. DHCP CLIENTS CONFIGURATION IN MULTISERVICE MODE On TAU-8N.IP devices it is possible to configure the options received by DHCP clients on different interfaces. According to the table, options 1, 3, 6, 26, 28, 33, 121, 249 can be requested by DHCP clients for each subinterface.
  • Page 105 TAU-8N.IP User Manual Configuration editing methods Using the vi editor 1. The list of options for the Internet interface is specified in the DHCPOptionList parameter of the ‘Internet → Network’ section. 2. The list of options for the VoIP interface is specified in the DHCPOptionList parameter of the ‘VoIP →...
  • Page 106 TAU-8N.IP User Manual DHCPOptionList Editing Rules Permitted parameter values: 3,6,12,15,26,28,33,40,41,42,43,66,67,120,121,249; The options in the DHCPOptionList parameter are separated by commas and no spaces between the options, an example of a DHCPOptionList: "3,6,12,15,26,120,121"; The order of options in DHCPOptionList is not important;...
  • Page 107 Contact Eltex Service Centre to receive technical support regarding our products: E-mail: eltex@eltex-co.ru Feedback form on the website: https://eltex-co.com/support/ Visit Eltex official website to get the relevant technical documentation and software or send us online request: Official website: https://eltex-co.com/ Download Center:...

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