[cisco-nas] Cisco 5300 Assistance -- PRI Problem

[Mark Menzies]

Hi all

First posting to a new list from a telephony newbie.

I am a sysadmin for an ISP with VoIP services and have a wee problem
with our aging cisco 5300 NAS.

We are using the cisco to connect 2 PRIs to a Telesoft telephony
switch.  We are seeing an issue where when we accept an incoming IP call
that we want to transfer over PRI, the call works for a few seconds,
then takes down the entire PRI.  The PRI comes back up fine, but the
issue remains for the next incoming call.

All calls from that PRI to IP work fine and do not drop the PRI.

Logs seem to indicate that the timing channel gets interrupted for some
reason, which drops the entire PRI, but all timing and clock source
settings appear fine.

All we need is to be able to :

*  take a call from IP, send it out over PRI (using both live PRIs)
*  take a call from either PRI and send it out over IP.

We do not need any funky dial-peers to determine routes/valid numbers
etc as we do that more easily elsewhere, all we need is a basic ISDN
gateway, to translate calls from PRI to IP and vice versa.   Can anyone
spot what I am doing wrong with our set up or perhaps suggest a better one?

An extract from the config is as follows:

We are currently using Version of IOS is  12.0(4)T1

We are using 2 PRIs, namely ser1:15 and ser0:15, but the error we see is
also on ser0:15, the original PRI we set.

If anyone needs more info to help us out, please let me know and I will
get it posted asap.

Thanks in advance

Mark

isdn switch-type primary-net5
!
!
voice service voip
 sip
  rel1xx disable
  min-se  600
!

!
controller E1 0
 pri-group timeslots 1-31
!
controller E1 1
 clock source line primary
 pri-group timeslots 1-31
!
controller E1 2
 clock source line secondary 1
 pri-group timeslots 1-31
!

!
interface Serial0:15
 description D Channel of PRI on Controller E1 0
 no ip address
 encapsulation hdlc
 dialer-group 1
 isdn switch-type primary-net5
 isdn incoming-voice data 64
 no cdp enable
!
interface Serial1:15
 description D Channel of PRI on Controller E1 1
 no ip address
 encapsulation hdlc
 dialer-group 1
 isdn switch-type primary-net5
 isdn incoming-voice data 64
 no cdp enable
!
interface Serial2:15
 description D Channel of PRI on Controller E1 2
 no ip address
 encapsulation hdlc
 dialer-group 1
 isdn switch-type primary-net5
 isdn incoming-voice data 64
 no cdp enable
!

!
voice-port 0:D
 timeouts interdigit 2
!
voice-port 1:D
 timeouts interdigit 2
!
voice-port 2:D
 timeouts interdigit 2
!


!
dial-peer voice 1 pots
 preference 2
 destination-pattern 0........+$
 no digit-strip
 direct-inward-dial
 port 2:D
!
dial-peer voice 2 voip
 destination-pattern 0........+$
 progress_ind setup enable 3
 rtp payload-type comfort-noise 13
 session protocol sipv2
 session target ipv4:x.x.x.x
 dtmf-relay rtp-nte
 codec g711alaw
 no vad
!
dial-peer voice 3 pots
 preference 1
 destination-pattern 0........+$
 no digit-strip
 direct-inward-dial
 port 1:D
!
sip-ua
 retry invite 7
 retry response 7
 retry bye 7
 retry cancel 7
 retry refer 3
 timers trying 1000
 timers expires 60000
 sip-server ipv4:x.x.x.x
!