UNIVERGE UM8500 I
NTEGRATION
G
UIDE
28
How the integration works
The following is an overview of the path an external call takes through the Cisco
AVVID network. The call travels from the Cisco gateway or router and CallManager
software, through UM8500, and on to a subscriber’s extension.
When an external call arrives, the Cisco gateway sends the call over the
LAN to the machine where the Cisco CallManager is installed.
For CallManager lines that are configured to route calls to UM8500,
CallManager tells the gateway to send the call to an available UM8500
extension.
UM8500 answers the call and plays the opening greeting.
During the opening greeting, the caller enters a subscriber’s name or
extension number, for example 1234.
UM8500 notifies CallManager that it has a call for extension 1234.
From this point, the path of the call depends on whether UM8500 is set
up to perform supervised transfers or release transfers.
Supervised Transfers
While UM8500 holds the call, the
CallManager attempts to
establish a connection with
extension 1234:
●
If the line is available,
CallManager connects the
call from UM8500 to
extension 1234. CallManager
and UM8500 drop out of the
loop and the call is
connected directly from the
Cisco gateway to extension
1234.
●
If the line is busy or
unanswered, CallManager
gives that information to
UM8500 and UM8500
performs the specified
operation, for example, it
takes a message.
Release Transfers
UM8500 passes the call to
CallManager and CallManager
sends the call to extension 1234
without waiting to determine if
the line is available. CallManager
and UM8500 drop out of the call
loop.
If UM8500 is set up to perform
release transfer, and if UM8500
takes messages when a line is
busy or unanswered, configure
each phone to forward calls back
to UM8500 when the line is busy
or unanswered.
Summary of Contents for UNIVERGE UM8500
Page 1: ......
Page 28: ...UNIVERGE UM8500 INTEGRATION GUIDE 18 ...
Page 62: ...UNIVERGE UM8500 INTEGRATION GUIDE 52 ...
Page 68: ...UNIVERGE UM8500 INTEGRATION GUIDE 58 ...
Page 94: ...UNIVERGE UM8500 INTEGRATION GUIDE 84 ...
Page 104: ...UNIVERGE UM8500 INTEGRATION GUIDE 94 ...
Page 114: ...UNIVERGE UM8500 INTEGRATION GUIDE 104 ...
Page 120: ...UNIVERGE UM8500 INTEGRATION GUIDE 110 ...
Page 126: ...UNIVERGE UM8500 INTEGRATION GUIDE 116 ...
Page 146: ...UNIVERGE UM8500 INTEGRATION GUIDE 136 ...
Page 164: ...UNIVERGE UM8500 INTEGRATION GUIDE 154 For a SPADLIC A trunk board ...
Page 172: ...UNIVERGE UM8500 INTEGRATION GUIDE 162 ...
Page 188: ...UNIVERGE UM8500 INTEGRATION GUIDE 178 ...
Page 193: ...NEC NEAX 2400 OR NEC SV7000 WITH LAN MCI 183 For a SPADLIC A trunk board ...
Page 222: ...UNIVERGE UM8500 INTEGRATION GUIDE 212 ...
Page 230: ...UNIVERGE UM8500 INTEGRATION GUIDE 220 ...
Page 276: ...UNIVERGE UM8500 INTEGRATION GUIDE 266 ...
Page 290: ...UNIVERGE UM8500 INTEGRATION GUIDE 280 ...
Page 302: ...UNIVERGE UM8500 INTEGRATION GUIDE 292 ...
Page 312: ...UNIVERGE UM8500 INTEGRATION GUIDE 302 ...
Page 336: ...UNIVERGE UM8500 INTEGRATION GUIDE 326 ...
Page 342: ...UNIVERGE UM8500 INTEGRATION GUIDE 332 ...