Call transfers drop on CME to CME sites

Unanswered Question
Aug 27th, 2008

On CME sites, call transfers are getting dropped from site B to site A but calls from site A to site B are not. People make a voip call across the network. Reach the person. Wnen the caller gets transferred by that person they hear a second or two of MOH then the call just drops. Call forwarding works however. And calls from the PSTN transfer fine. There are 30 CME sites and some sites drop the call transfers and other sites the calls go through. The IOS is ver 12.3.11T8 and the CME ver is 3.2. The basic configs are all the same on the CMEs.

What debugs can I use to troubelshoot this?

This problem occured with calls from a CCM site to CME sites, but I Checked the MTP Required box on the gateway configuration page and now the calls from a CCM site to a CME site will transfer. Thanks for any ideas.

Site A configs

voice service voip

allow-connections h323 to h323

allow-connections h323 to sip

allow-connections sip to h323

supplementary-service h450.12

h323

!

!

!

voice class codec 1

codec preference 1 g711ulaw

codec preference 2 g729r8

!

dial-peer voice 7731 voip

corlist outgoing offsitevoip

description To SITE B Site to Site

translation-profile outgoing out-strip-8

destination-pattern 8731....

voice-class codec 1

session protocol sipv2

session target ipv4:172.65.2.9

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

no vad

telephony-service

load 7910 P00403020214

load 7960-7940 P00303020214

load 7914 S00103020002

load ATA ata18x-v2-16-ms-030327b

load 7905 CP79050101SCCP030530B

max-ephones 70

max-dn 140

ip source-address 172.75.2.9 port 2000

system message XXXXXXXXXXXXXXxx

create cnf-files version-stamp 7960 Mar 08 2004 15:30:22

dialplan-pattern 1 7305... extension-length 4 extension-pattern 5...

voicemail 1000

mwi relay

max-conferences 8

moh music-on-hold.au

multicast moh 239.10.16.4 port 2000

web admin system name XXXXXXXXXXXXX

web admin customer name XXXXXXXXXXXXX

dn-webedit

time-webedit

transfer-system full-blind

transfer-pattern 9.......

secondary-dialtone 9

SITE B

voice call send-alert

voice rtp send-recv

!

voice service voip

allow-connections h323 to h323

allow-connections h323 to sip

allow-connections sip to h323

no supplementary-service h450.2

no supplementary-service h450.3

supplementary-service h450.12

h323

!

!

!

voice class codec 1

codec preference 1 g711ulaw

codec preference 2 g729r8

!

dial-peer voice 7730 voip

corlist outgoing offsitevoip

description To SITE A Site to Site

translation-profile outgoing out-strip-8

destination-pattern 8730....

voice-class codec 1

session protocol sipv2

session target ipv4:172.75.2.9

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

no vad

supplementary-service h450.12

telephony-service

load 7960-7940 P00303020214

load 7914 S00103020002

load ATA ata18x-v2-16-ms-030327b

load 7905 CP79050101SCCP030530B

max-ephones 70

max-dn 140

ip source-address 172.65.2.9 port 2000

system message SITE B

create cnf-files version-stamp Jan 01 2002 00:00:00

dialplan-pattern 1 7315... extension-length 4 extension-pattern 5...

voicemail 1000

mwi sip-server 172.65.2.9 transport tcp

mwi relay

mwi expires 86400

max-conferences 8

moh music-on-hold.au

multicast moh 239.10.16.4 port 2000

web admin system name XXXXXXXXXXXXXXXXXXXXX

web admin customer name XXXXXXXXXXXXXXXXXX

dn-webedit

time-webedit

transfer-system full-blind

transfer-pattern 9.......

transfer-pattern .T

secondary-dialtone 9

!

I have this problem too.
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craiglcve Wed, 08/27/2008 - 19:19

Do you have the h323-gateway voip bind srcaddr "ip-address" on your ethernet interfaces?

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