Sip Telephony; External Sip Connections - Aastra OpenCom 100 Mounting And Commissioning User Manual

Voice over IP (VoIP)
4. Confirm with Apply.
The configuration page displays the MGW interface card's MAC address. You will
need this for the static assignment of an IP address via a DHCP server.
Updating the interface card's software
Whenever a newer version of the M100-IP Gatewaymodul interface card's software
becomes available, you can use the System: Components to load it (MGC VoIP
option, "mgw_xxxx.tar.gz" file). The file size of a software update is approx. 2 meg-
abyte and it takes approx. 5 minutes to load it via a LAN.
Version display
The current version of the of the M100-IP Gatewaymodul interface card's software
is displayed on the Telephony: Ports: Slots status page.
9.4

SIP Telephony

The SIP Internet (Session Initiation Protocol) protocol provides you with a low-cost,
standardised option for telephoning via IP-based networks. The OpenCom 130 /
150 enables you to use external SIP telephone connections ("SIP trunk lines"). Fur-
thermore, internal SIP subscribers, SIP telephones or SIP telephony software are
also supported (see also Quick Start: External SIP Line starting on page 104 and
Internal SIP Telephony starting on page 106).

9.4.1 External SIP Connections

The Telephony: Trunks: Route menu gives you the option to configure a bundle
overflow, which automatically occupies a second line in case of a breakdown or
over-occupancy of the SIP connection. You can also set up your system to route
certain types of calls, such as international calls, to an SIP connection.
You will also need a fast Internet connection such as DSL for SIP telephony.
Note: During the commissioning of a MGW interface card,
the software MGW function is automatically switched off.
Note: You will need a Media Gateway card for SIP telephony.
SIP Telephony
115