Avaya BCM50 Konfigurationsanleitung Seite 363

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363
Networking Configuration Guide
Chapter 42
VoIP overview
On the BCM, the LAN configuration consists of two components: Router LAN configuration,
which determines how the router communicates with devices on the LAN, and Main Module LAN
configuration, which determines how the Main Module of the BCM communicates with other
devices on the LAN.
IP telephones
IP telephones offer the functionality of regular telephones but do not require a hardwire connection
to the BCM. Instead, they must be plugged into an IP network, which is connected to the LAN or
WAN on the BCM. Calls made from IP telephones through the BCM can pass over VoIP trunks or
across a Public Switched Telephone Network (PSTN).
Nortel has several types of IP telephones that connect to the BCM through Ethernet. The IP
softphone 2050, which runs as a client application on a PC or PDA, also connects to the BCM
through the Ethernet.
VoIP trunks
VoIP trunks allow voice signals to travel across IP networks. A gateway within the BCM converts
the voice signal into IP packets, which are then transmitted through the IP network to a gateway on
the remote system. The device at the other end reassembles the packets into a voice signal.
Creating an IP telephony network
An IP telephony network consists of telephones, gatekeepers, IP networks, and access to a PSTN.
Networking with BCM
The BCM is a key building block in creating your communications network. It interoperates with
many devices, including the Meridian 1 system and BCM devices. The BCM system can be
connected to devices through multiple IP networks, as well as through the PSTN. Multiple BCM
systems also can be linked together on a network of VoIP trunks and/or dedicated physical lines.
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