Configuration manual

such calls routed via the headquarters site wherever possible. In addition, the branch staff want
to keep their branch phone numbers.
• 3-digit branch numbers beginning with 8, ie. 800 to 899.
• 3-digit native extension numbers beginning with 2, ie. 200 to 299.
• Dial 9 prefix for outgoing PSTN calls.
• National and international calls allowed but routed via the headquarters site's PSTN
trunks.
• Where a national call matches a branch location, it should be routed to the PSTN via that
branch.
• Local calls allowed from each branch using its own PSTN trunks.
• CallPilot 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 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.
Voicemail considerations
Implementing B5800 Branch Gateway for a CS 1000 Configuration October 2012 39