Voice over IP (VoIP) SIP Telephony
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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.
Note: During the commissioning of a MGW interface card,
the software MGW function is automatically switched off.
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Whenever a newer version of the M100-IP Gatewaymodul interface card’s software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 Tel epho ny : 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 Tele phony : 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.
Note: You will need a Media Gateway card for SIP telephony.
You will also need a fast Internet connection such as DSL for SIP telephony.
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