Call from CME to other PABX

[nguyendd]

Hi all,

My proplem is, when I call from my CME to an other PABX, the call was established successful and can hear the AA. But when I dial the extension, the call drop. Call flow as below:

1. Call to an other PABX number

2. Hear the AA voice

3. Dial extension number

4. Call drop

Below is my telephony-service configuration:

telephony-service
 sdspfarm units 10
 sdspfarm tag 1 confer2
 conference hardware
 max-ephones 58
 max-dn 300
 ip source-address 192.168.31.1 port 2000
 load 7942 SCCP42.9-3-1SR4-1S
 time-zone 41
 time-format 24
 max-conferences 22 gain -6
 call-forward pattern .T
 transfer-system full-consult
 transfer-pattern .T
 create cnf-files version-stamp May 07 2014 13:45:00

Thanks

[Suresh Hudda]

did you apply dtmf relay to the dial peer which is pointing to pbx ?

Suresh

[Tagir Temirgaliyev]

I think it is a pots dial-peer from cme to pabx

[nguyendd]

Hi Suresh,

Thanks for your reply. Here is my dial-peer configure:

dial-peer voice 1 voip
 destination-pattern 4..
 session target ipv4:192.168.20.3
!
dial-peer voice 2 voip
 destination-pattern 9T
 session target ipv4:192.168.20.3
!
dial-peer voice 3 voip
 destination-pattern 111
 session target ipv4:192.168.20.3
!
dial-peer voice 40 voip
 destination-pattern 8T
 session target ipv4:192.168.20.3

Thanks

Nguyen

[Sreekanth Narayanan · Accepted solution]

Hi Nguyen,

You've not specified the dtmf-relay to be used for these dial-peers. It looks like you are using h323 as the protocol to send the call to the PABX? Is that right?

If so, add the 'dtmf-relay  h245-alphanumeric' command to the dial-peers that are pointing to the PABX and try the call again.

Thanks

[nguyendd]

It's worked, thank you very much, Sreekanth

[Sreekanth Narayanan]

Glad to know that! Thanks for updating.

[nguyendd]

And dial-peer of gateway 192.168.20.3

dial-peer voice 20 voip
 destination-pattern 2..
 session target ipv4:192.168.21.2
!
dial-peer voice 30 voip
 destination-pattern 3..
 session target ipv4:192.168.21.2
!
dial-peer voice 10 voip
 destination-pattern 1..
 session target ipv4:192.168.21.2
!
dial-peer voice 2 pots
 service aa
 destination-pattern 8T
 port 0/1/1

Thanks

Nguyen