Aastra OpenCom 131 User Guide - Page 117
SIP Telephony, 9.4.1 External SIP Connections, Apply, Updating the interface card's software
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Voice over IP (VoIP) SIP Telephony 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 Updating the interface card's software Whenever a newer version of the M100-IP Gatewaymodul interface card's software becomes available, you can use the System: Components to load it (MGC VoIP option, "mgw_xxxx.tar.gz" file).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 megabyte 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"). Furthermore, 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. 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. 115