Integrate Voice Gateway with Legacy PAPBX ( Alcatel OmniPCX)

[ssengotaiyan]

Guys

I am trying to intergate Legacy PBX with cisco voice gateway. My scenario is like below.

PSTN ( ISDN PRI)<==E1 Serial ==> Cisco Router 2811 <==IP WAN==> Cisco Router 2811 CPE <== E1 serial ==> Alcatel OmniPCX PAPBX legacy systerm.

I am having problem for outbound calls. i can call inbound it works fine howeevr i am not able to make any outbound calls as Alcatel is sending digit by digit. I have dial peer which match any outbound calls however when the call establish between there is no destination call.

I have checked with legacy PAPBX engineer, he mentioned the PBX is configured with overlapping, i have already added ISDN overlapping command under serial interface between CPE and Alcatel. Still no changes.

Can you please advise me what need to be done for this to fix?.

Your earliest response would be appreciated.

Thanks

SS

[Daniele Giordano]

I've a Cisco 2431 connected to an Alcatel OminiPCX via ISDN PRI.
This is my configuration:

isdn switch-type primary-net5
!
!
voice call send-alert
no voice call carrier capacity active
voice rtp send-recv
!
voice service voip
fax protocol pass-through g711alaw
h323
  call service stop
modem passthrough nse codec g711alaw
sip
  min-se  300

!
!
controller E1 1/0
clock source internal
pri-group timeslots 1-31

!
!
interface Serial1/0:15
no ip address
encapsulation hdlc
no logging event link-status
no snmp trap link-status
isdn switch-type primary-net5
isdn overlap-receiving T302 5000
isdn protocol-emulate network
isdn incoming-voice voice
isdn send-alerting
isdn negotiate-bchan
isdn sending-complete
no isdn outgoing display-ie
no cdp enable
!
!
voice-port 1/0:15
no non-linear
no vad
playout-delay nominal 150
playout-delay mode fixed
cptone IT
timeouts interdigit 3
timeouts wait-release 3

!
!
dial-peer voice 10 pots
destination-pattern "OMITTED"
progress_ind alert strip 2
direct-inward-dial
port 1/0:15
prefix "OMITTED"
!
!
dial-peer voice 1 voip
incoming called-number .
destination-pattern .T
translate-outgoing calling 1
modem passthrough nse codec g711alaw
session protocol sipv2
session target dns:"OMITTED"
session transport udp
dtmf-relay rtp-nte
codec g711alaw
fax rate disable
fax protocol pass-through g711alaw
no vad
!
sip-ua
disable-early-media 180
max-forwards 10
retry invite 3
timers expires 60000
no suspend-resume

Try to post the output of "debug isdn q931" during outgoing calls.
Also "debug voice ccapi inout".

Best regards.

[Arun Thomas]

Try changing the switch type to 'qsig' on the E1 connecting between Cisco router and PBX

    Cisco Router 2811 CPE <== E1 serial ==> Alcatel

interface Serial1/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-qsig

isdn overlap-receiving T302 2000

isdn protocol-emulate network

isdn incoming-voice voice