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50 Chapter 5 Voice Mail Servers
NN10043-113
[Standard - Nortel Networks Confidential]
Voice mail server types
The following voice mail server types are supported as described in the following
table (Table 6).
Provisioning a SIP-based voice mail server
Provisioning a SIP-based voice mail server allows the administrator to configure
the SIP Application Module to communicate with a voice mail server using the
SIP protocol.
The SIP Application Module is given information on what to query to find the
location of the voice mail server. The SIP Application Module will use this
information to send SIP calls to the voice mail server when calls are routed to
voice mail.
Table 6 Voice mail server types
Voice mail server type Description
SIP-based An IP based voice mail server that uses the SIP protocol.
This server type does not need a PSTN gateway.
Line-based A voice mail server with multiple lines, each identified by
a 10 digit phone number that goes into the voice mail
server. When people leave messages, the individual
lines are used in a round robin manner to connect to the
voice mail server to allow someone to leave a message.
TheSIPApplicationModulesendsanSMDImessageto
the voice mail server to help establish the connection to
the SIP Application Module that uses SMDI to obtain
Message Waiting Indication (MWI) information from the
voice mail server.
Trunk-based A legacy Public Switched Telephone Network (PSTN)
based voice mail server that uses a Primary Rate
Interface (PRI) or Channel Associated Signalling (CAS)
gateway.The SIP Application Module uses SMDI to send
call setup information using a Call Detail Message to get
Message Waiting Indication (MWI) information from the
voice mail server.