Configuration manual

• Modular Messaging at the headquarters site provides voicemail services to all
employees.
• The LAN on each branch has a unique IP address, 192.168.42.1, 192.168.44.1 and so
on.
• National calls are made via the branch's PSTN trunks when the branch data connection
to the headquarters site is not available or at maximum capacity.
This example assumes that all the branches were initially setup with the default North American
locale. For B5800 Branch Gateway that means that a dial 9 prefix is used for external calls.
For calls in other locales or between branches in different locals, the example will need to be
adjusted to ensure that the resulting number received at the remote branch will be routed to
an external PSTN trunk and is suitable for external dialing.
Voicemail considerations
The B5800 Branch Gateway system uses its Embedded Voicemail by default. However, a
number of other voicemail options are supported.
• Embedded Voicemail — Embedded Voicemail uses the system SD card in the B5800
Branch Gateway system control unit for storage of prompts and messages. Embedded
Voicemail supports mailboxes for all local extension numbers, announcements to waiting
callers, and auto attendants (up to 40) for external calls. Its capacity is limited to 15 hours
of recorded messages, prompts and announcements. Embedded Messaging Port
licenses must be purchased with sufficient quantity to support the configured number of
ports.
• Standalone Voice Mail — Standalone Voice Mail provides the same features as
Embedded Voicemail but with additional port capacity provided on a Linux server. You
must have a Linux server installed to use this option. When you select this option, you
must enter the IP address of the Linux server where Standalone Voice Mail is installed.
This option provides a maximum capacity of 40 ports while the Embedded Voicemail
option provides a maximum capacity of 6 ports. Embedded Messaging Port licenses must
be purchased with sufficient quantity to support the configured number of ports.
• Avaya Aura Messaging — The B5800 Branch Gateway system can be configured to
use Avaya Aura Messaging as its voicemail server when Session Manager is used as the
core SIP router. See
Configuring B5800 Branch Gateway to use Avaya Aura Messaging
for voicemail on page 176 for more information. When Avaya Aura Messaging is used
as the central voicemail system, at each branch you have the option to still use the local
Embedded Voicemail for auto attendant operation and for announcements to waiting
calls. Note that for this configuration, Embedded Voicemail licenses are required.
• Modular Messaging over SIP — The B5800 Branch Gateway system can be configured
to use Modular Messaging over SIP as its voicemail server when Session Manager is
used as the core SIP router. See
Configuring B5800 Branch Gateway to use Modular
Messaging over SIP for voicemail on page 178 for more information. When Modular
Messaging over SIP is used as the central voicemail system, at each branch you have
the option to still use the local Embedded Voicemail for auto attendant operation and for
Voicemail considerations
Implementing the Avaya B5800 Branch Gateway for an Avaya Aura
®
Configuration October 2012 37