Cisco DPA 7610, Руководство администратора

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Chapter 2 Choosing an Integration Mode
Using the Hybrid Integration Mode
2-8
Cisco DPA 7630/7610 Voice Mail Gateways Administration Guide
78-11069-03
However, this configuration does not resolve many of the following issues with
the voice mail system:
• The PRI link loses information.
When a user on an IP phone accesses the voice mail system directly, the
extension number of the IP phone is not transferred across the ISDN PRI link.
Therefore, the voice mail system cannot give the correct greeting to the user
of the IP phone, and users must enter their voice mailbox number.
• The voice mail system cannot activate the MWI light on the IP phones.
On a Definity PBX, the voice mail system controls the phones’ MWI lights
by dialing feature access codes. This does not work across the ISDN PRI link.
For example, if IP phone 1234 is left a message, the voice mail system
notifies the PBX to light MWI 1234, which the PBX considers an error
because it does not have extension 1234.
To resolve these problems, up to 16 of the ports on the DPA 7630/7610 can
connect to the Octel system in the same way as in the simple integration mode.
You can then set up a separate hunt group for the IP phones, which is accessed
using one of the lines connected to the DPA 7630/7610. This solution enables the
following call types to function properly because the caller and number are no
longer lost:
•
Direct calls to the voice mail system from an IP phone
•
Calls to an IP phone that are forwarded to voice mail
Because the Octel voice mail system cannot determine which MWI lines are used
for particular extensions, the DPA 7630/7610 must handle all MWI requests from
the Octel system. Therefore, the remaining 8 ports on the DPA 7630/7610 must
connect to the Definity or Meridian 1 PBX system. The DPA 7630/7610 performs
a pass-through operation on these ports, allowing the Octel, Definity, and
Meridian 1 systems to function as before.
However, because the DPA 7630/7610 does not have knowledge about the dial
plans, it sends the MWI command to the Cisco CallManager and the Definity or
Meridian 1 PBX system. The DPA 7630/7610 ignores any errors received from
either the PBX or Cisco CallManager.