IVR disconnection problem on the SIP trunk

[lidavpast]

Hello everybody,

I have a simple voice network setup:

SIP trunk -------- ISR 2821 (IVR) ----------- CUCM 7.1.3

On the ISR 2821 IVR script is installed. After receiving incoming call, IVR plays the prompt.au and disconnects.

The same script works fine on the PRI line of the mentioned voice gateway.

I provide the partial configuration of the ISR and upload installed IVR script.

!

application
  service ivr flash:ivr.tcl

!

dial-peer voice 191 voip
  service ivr
  session protocol sipv2
  incoming called-number 3547777
  codec g711ulaw
  no vad

!

I will be grateful for any help and advice.

Kind regards,

Lidiia

[Abu Hadee]

whats the protocol you are using between sip provider to 2811 and 2811 to cucm?

You may need to add following

voice service voip

  allow-connection sip to sip

  allow-connection sip to h323

  allow-connection h323 to sip

  allow-connection h323 to h323

!

Thanks

- abu

[lidavpast]

Hi Abu,

Thank you for your reply.

You right. H.323 works between CUCM and 2821 gateway.

SIP ISP ------ 2821 Voice GW ----- (h.323) ----- CUCM 7.1.3

But I have the configuration you wrote about.

!

voice call send-alert
voice rtp send-recv
!
voice service pots
!
voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
no supplementary-service sip moved-temporarily
no supplementary-service sip refer
fax protocol pass-through g711ulaw
h323
sip
  registrar server
!

If you have any thoughts how to troubleshoot such type of problems, please, write it to me.

Thank you!

Lida

[lidavpast]

Hi All,

We resolwing this issue by upgrading IOS on GW. Current version is

c2800nm-adventerprisek9_ivs-mz.151-4.M1.bin

Configuration remains the same.

P.S. Don't forget to add

voice service voip

no ip address trusted authenticate

because, by defaul, 15.x IOS accepts calls only from trusted peers.