Handling Incoming Caller Id Digits On An E&M Port - Cisco WS C4224V 8FXS - 200Mbps Ethernet Switch Software Configuration Manual

E&M Trunk Line Configuration (H.323)
Figure 5-2 Linking PBX Users with E&M Trunk Lines
Dial peer
Voice port
1 POTS
PBX
Dial peer Voice port
2 POTS
San Jose
(408)
Note
Handling Incoming Caller ID Digits on an E&M Port
Catalyst 4224 Access Gateway Switch Software Configuration Guide
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172.16.1.123 172.16.65.182
1/0/0
IP cloud
V
Catalyst 4224
1/0/1
This scenario assumes that the company already has established a working IP
connection between its two remote offices.
When using an H.323 T1-CAS E&M port on the Catalyst 4224, Incoming
Caller ID Digits may not be processed correctly by Cisco CRA, such as Cisco IP
Auto-Attendant.
Depending on the T1-CAS line provisioning, incoming dialed number
identification service (DNIS) digits received by the Catalyst 4224 after its first
wink to the Central Office (CO) are treated as user-entered digits and are sent to
the remote endpoint as out-of-band DTMF digits. If the remote endpoint is a
Cisco CRA application, the out-of-band digits will be interpreted as a user entry
and will change the application response.
There are two ways to handle this situation:
Ask the T1 service provider to stop sending DNIS digits.
•
Configure an IP phone with the same directory number as the incoming
•
DNIS, then modify the "forward all" selection for this phone so that it sends
the incoming call to the desired destination.
Chapter 5
Dial peer
Voice port
1 POTS
1/0/0
PBX
V
Catalyst 4224
Dial peer
Voice port
2 POTS
1/0/1
Salt Lake City
(801)
Configuring the Voice Interfaces
OL-2031-02