Virtual Trunks; Ip Phone Calls - Avaya 1000 Installation And Commissioning Manual

How the Branch Office feature works
Testing the telephone in Local Mode
From Normal Mode, a Branch Office user can use Test Local Mode to test telephone functionality in
Local Mode. The user can perform the test at any time and does not require a password. This test is
invoked from the IP Phone.
Avaya recommends testing Local Mode operation after changing the provisioning for a telephone on
the MG 1000B.
To ensure that users do not forget to resume Normal Mode operation, the MG 1000B TPS redirects
the telephone to the main office to return the telephone to Normal Mode. This occurs if the
telephone remains registered to the MG 1000B Call Server in Test Local Mode for ten minutes.
Alternatively, the user can select Resume Normal Mode from the Options menu.
If a Branch Office telephone in Test Local Mode logs into another Branch Office TN through Virtual
Office, makes an ESA call and is redirected (for example, their location is not known), the telephone
is correctly redirected to its original TN to complete the call. When the ESA call is complete, the
telephone immediately reregisters with the Main Office rather than remaining registered to the
Branch Office for 10 minutes.
For more information, see Avaya Emergency Services Access: Description and Administration,
(NN43001-613).

Virtual Trunks

In order for endpoints in the Avaya Communication Server 1000 network to access endpoints in
local mode at the Branch Office or to access the PSTN at the Branch Office, 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.
For more information on Virtual Trunks, refer to Avaya 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. Also note that when in Normal Mode, an MG
1000B IP Phone calling a main office IP Phone does not require any trunking to setup 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 Avaya IP Peer Networking Installation and Commissioning,
NN43001-313.
Branch Office Installation and Commissioning
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Comments? infodev@avaya.com
June 2014