Cannot call to some external site

[Abzal]

Hello gents,

We are having some problems with calling to external sites. The phone call to that site goes through Voice Gateway in Italy. We've checked IP routing, Call Manager configurations.  Also we've checked that VG configurations it all seem ok. Nothing is blocking voice packets or UDP traffic. Last thing we've done is port span where our Cisco IP Phone (7941G) is connected with Wireshark and you did not see any voice packets coming out of that port but coming in voice packets there is no problem.

The problem is we (where call is originated) can hear other side but they cannot hear us. Call registration establishment is ok.

Call manager version is 4.3.

Please, help me out.

I will provide you with additional information if you need.

[piyush aghera]

Hi Abzal,

I mean to say can you do a successful trace route from the source to the remote gateway? Give a try from your source gateway and the user desktop from where the call is generated.

[dave.hodgkiss]

Abzal,

How is your gateway configured,

We had a site in Pontecchio and Motara which had problems making calls.H323  Isdn interface config below. Italia Telecom was the provider

!

interface Serial0/0/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn overlap-receiving T302 5000

isdn incoming-voice voice

isdn send-alerting

isdn bchan-number-order ascending

isdn sending-complete

no cdp enable

!

voice-port 0/0/0:15

translation-profile incoming INCOME-DDI

echo-cancel coverage 32

no vad

cptone IT

bearer-cap Speech

!

E1 0/0/0 is up.
  Applique type is Channelized E1 - balanced
  No alarms detected.
  alarm-trigger is not set
  Version info Firmware: 20071009, FPGA: 20, spm_count = 0
  Framing is CRC4, Line Code is HDB3, Clock Source is Line.
  CRC Threshold is 320. Reported from firmware  is 320.
  Data in current interval (649 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Total Data (last 24 hours)
     1 Line Code Violations, 1 Path Code Violations,
     0 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins,
     1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Cheers

Dave

[dave.hodgkiss]

Abzal,

How is your gateway configured,

We had a site in Pontecchio and Motara which had problems making calls.H323  Isdn interface config below. Italia Telecom was the provider

!

interface Serial0/0/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn overlap-receiving T302 5000

isdn incoming-voice voice

isdn send-alerting

isdn bchan-number-order ascending

isdn sending-complete

no cdp enable

!

voice-port 0/0/0:15

translation-profile incoming INCOME-DDI

echo-cancel coverage 32

no vad

cptone IT

bearer-cap Speech

!

E1 0/0/0 is up.
  Applique type is Channelized E1 - balanced
  No alarms detected.
  alarm-trigger is not set
  Version info Firmware: 20071009, FPGA: 20, spm_count = 0
  Framing is CRC4, Line Code is HDB3, Clock Source is Line.
  CRC Threshold is 320. Reported from firmware  is 320.
  Data in current interval (649 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Total Data (last 24 hours)
     1 Line Code Violations, 1 Path Code Violations,
     0 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins,
     1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Cheers

Dave