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Cisco IP Telephony Troubleshooting Guide for Cisco CallManager Release 3.0(1)
The following hardware trace on the Cisco Catalyst 6000 8 Port Voice T1/E1 and Services
Module, indicates that the E1 port 4/2 in the card has registered as an MTP/transcoder with
Cisco CallManager.
greece-sup (enable) sh port 4/2
Port Name
Status
----- ------------------ ---------- ---------- ------ ----- ------------
4/2
enabled 1
Port
DHCP MAC-Address
-------- ------- ----------------- --------------- ---------------
4/2
disable 00-10-7b-00-0f-b1 10.200.72.32 255.255.255.0
Port
Call-Manager(s) DHCP-Server
-------- ----------------- --------------- --------------- ---------------
4/2
10.200.72.25
Port
DNS-Server(s)
-------- ----------------- -------------------------------------------------
4/2
-
0.0.0.0
Port
CallManagerState DSP-Type
-------- ---------------- --------
4/2
registered
C549
Port NoiseRegen NonLinearProcessing
----- ---------- -------------------
4/2 disabled disabled
Note: The same E1 port cannot be configured for both Conference Bridge and Transcoder/MTP
In order to make a call between two devices using a low bit rate code (such as G.729 and G.723)
that do not support the same codec, a transcoder resource is required. Consider the following
illustration:
A
B
C
© 2000 Cisco Systems, Inc.
Vlan
Duplex Speed Type
full
- MTP
IP-Address
TFTP-Server
-
10.200.72.25 -
Domain
Cisco CallManager
WAN
Region1
Subnet-Mask
Gateway
IP
Region2
D
E
F
34
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