BRI IN "TEI_ASSIGNED" AND MGCP

Question

Hello,
We have tried to configure a MGCP gateway with BRI link and CCM 4.1.
The particularity of the link is that, when no calls are active, it remains in "TEI_ASSIGNED" state:
ISDN BRI0/1/0 interface
dsl 2, interface ISDN Switchtype = basic-net3
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 2 CCBs = 0
The Free Channel Mask: 0x80000003
Due to this, MGCP configuration is not working - the CCM seems to not be able to send the call to the BRI. On the other hand, if I configure the gateway with H.323 protocol, calls progress normally.
Is there any way in MGCP configuration of forcing MULTIPLE_FRAME_ESTABLISHED in these type of links??? Thanks.

Answer 1

Here is a bug on this.
CSCsc03264 Bug Details
Headline MGCP media bind :INACTIVE after reload when using an interface
Product IOS
Feature Voice Components Duplicate of
Severity 3 Severity help Status Resolved Status help
First Found-in Version 12.3T All affected versions First Fixed-in Version
12.4(6.5)T, 12.4(6.6), 12.3(11)T10, 12.4(2)T04, 12.4(4)T02, 12.3(14)T07,
12.4(03d), 12.4(05b), 12.4(6)T01 Version help
Release Notes
MGCP bind to interface vlan may become inactive after reload.
Workaround: Use a loopback interface in the bind command.
Here is my usage:
interface Loopback0
description ABC Corp IPT
ip address XXX.XXX.XXX.XXX 255.255.255.255 -->IP of this Interface Reachable from Call MGR
h323-gateway voip interface
h323-gateway voip bind srcaddr XXX.XXX.XXX.XXX --> IP of this Interface same as above
interface Serial0/0:23
isdn switch-type primary-ni
isdn incoming-voice voice
isdn bind-l3 ccm-manager
mgcp
mgcp call-agent xxx.xxx.xxx.xxx 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp modem passthrough voip mode nse
no mgcp fax t38 ecm
mgcp bind control source-interface Loopback0
mgcp bind media source-interface Loopback0
mgcp profile default
Refrences
Cisco IOS MGCP with PRI configuration
http://www.cisco.com/en/US/partner/tech/tk652/tk701/technologies_configuration_example09186a00801ad22f.shtml
Interworking of IOS MGCP Gateway and Call Manager
http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps5012/products_feature_guide09186a0080087fd9.html
Configuring SRST and MGCP Fallback
http://www.cisco.com/en/US/partner/tech/tk652/tk701/technologies_tech_note09186a0080144630.shtml
Understanding MGCP Interactions with Cisco CallManager
http://www.cisco.com/en/US/partner/tech/tk652/tk701/technologies_tech_note09186a00801da84e.shtml