Ip Phone Calls - Nortel 1000 Configuration Manual

Nortel 1000 servers: user guide
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Testing the phone in Local Mode
From Normal Mode, the branch user has the option of going to Local Mode
manually using the Test Local Mode feature, or when the telephone is
power-cycled. The test can be performed by the user at any time and
does not require a password. This test is invoked from any IP Phone at
the branch office.
Nortel recommends testing Local Mode operation after changing the
provisioning for a telephone on the SRG.
To ensure that users do not forget to resume Normal Mode operation, the
SRG redirects the telephone to the main office to return the telephone to
Normal mode. This occurs if the telephone remains registered to the SRG
in Test Local Mode for ten minutes (default setting). Alternatively, the user
can press the Quit key on the phone to return to Normal Mode.
For further information about Local Mode functionality for SRG, see SRG50
Configuration Guide (NN40140-500).
Virtual Trunks
In order for endpoints in the CS 1000 network to access endpoints in local
mode at the SRG or to access the PSTN at the SRG, Virtual Trunks are
used over the LAN/WAN.
Virtual Trunks are software components that provide the trunking features
of the Meridian Customer-Defined Network (MCDN) feature set. Access
to PSTN digital or analog trunks at the branch office occurs through the
MCDN Virtual Trunk.
Virtual Trunks are sometimes referred to as SIP or H.323 Virtual Trunks. In
the SRG50 Configuration Guide (NN40140-500), Virtual Trunks are referred
to as IP Trunks.
For more information about Virtual Trunks, see IP Peer Networking
Installation and Commissioning (NN43001-313).

IP Phone calls

When an IP Phone calls another IP Phone, each telephone receives the
address of the other to exchange media directly between the telephones.
When in Normal Mode, an SRG IP Phone calling a main office IP Phone
does not require any trunking to set up the call. However, LAN/WAN
bandwidth is used to provide a media path for the call. For more information
on Direct IP media path functionality, see IP Peer Networking Installation
and Commissioning (NN43001-313).
Copyright © 2005-2007, Nortel Networks
.
Nortel Communication Server 1000
Main Office Configuration Guide for SRG 50
NN43001-307 02.02 Standard
Release 5.0 3 December 2007
Normal Mode and Local Mode overview 23

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