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Voice Pri crackling

jgranda
Level 1
Level 1

Cisco 2821 with dual Vwic T1 card

Having a probkem with two PRI circuit the voice crakling. Both circuit are running error free. Do the following

1) replace the Dual Vwic card same issue

2) Replaced three DSP cards

3) change the slot from 1 to 3

All internal calls no issues. Only calls that are coming through the both PRI get the crakling. The phone company has tested the circuit ans is poing to the equipment. Can I get any recomendation what to test next.

Thanks,

Jose

16 Replies 16

dino55088
Level 1
Level 1

Can you paste  controller T1 and voice card related config and show controller t1.

did you setup master clock on of the t1 using network-clock-select ?

Here is the inforamtion you requested

network-clock-participate wic 3

network-clock-select 1 T1 0/3/0

network-clock-select 2 T1 0/3/1

 

controller T1 0/3/0

cablelength long 0db

pri-group timeslots 1-24

description voice-local-PSTN

 

controller T1 0/3/1

cablelength long 0db

pri-group timeslots 1-24

description voice-ld-PSTN

 

 

interface Serial0/3/0:23

no ip address

encapsulation hdlc

isdn switch-type primary-4ess

isdn incoming-voice voice

no cdp enable

!

interface Serial0/3/1:23

no ip address

encapsulation hdlc

isdn switch-type primary-4ess

isdn incoming-voice voice

no cdp enable

 

dial-peer voice 1 pots

description PSTN Inbound

translation-profile incoming pstn-inbound

service cvp-survivability

incoming called-number 2200

direct-inward-dial

port 0/3/0:23

 

dial-peer voice 5 pots

description TF-800 Outbound

destination-pattern 81800.......

port 0/3/0:23

forward-digits 11

!

dial-peer voice 6 pots

description TF-866 Outbound

destination-pattern 81866.......

port 0/3/0:23

forward-digits 11

!

dial-peer voice 7 pots

description TF-877 Outbound

destination-pattern 81877.......

port 0/3/0:23

forward-digits 11

!

dial-peer voice 8 pots

description TF-888 Outbound

destination-pattern 81888.......

port 0/3/0:23

forward-digits 11

!

dial-peer voice 9 pots

description 911 Outbound

destination-pattern 911

port 0/3/0:23

forward-digits 3

!

dial-peer voice 11 pots

description Services Outbound

destination-pattern 8[4,6,7]11

forward-digits 3

!

dial-peer voice 12 pots

description Local Outbound

destination-pattern 8210[2-9]......

port 0/3/0:23

forward-digits 10

!

Let me know if this help or you need teh complete configuration

Hi,

Can you please post the output of a show controller T1?

Thanks

Regards

Carlo

Please rate all helpful posts "The more you help the more you learn"

Carlo, here is the information

                         T1 0/3/0 is up.

  Applique type is Channelized T1

  Cablelength is long 0db

  Description: voice-local-PSTN Windstream CKT ID 31HCGS700854SW Account 534096

  No alarms detected.

  alarm-trigger is not set

  Soaking time: 3, Clearance time: 10

  AIS State:Clear  LOS State:Clear  LOF State:Clear

  Version info Firmware: 20090408, FPGA: 13, spm_count = 0

  Framing is ESF, Line Code is B8ZS, Clock Source is Line.

  CRC Threshold is 320. Reported from firmware  is 320.

  Data in current interval (255 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 64 15 minute intervals):

     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

T1 0/3/1 is UP.

  Applique type is Channelized T1

  Cablelength is long 0db

  Description: voice-ld-PSTN

  Transmitter is sending remote alarm.

  Receiver has loss of frame.

  alarm-trigger is not set

  Soaking time: 3, Clearance time: 10

  AIS State:Clear  LOS State:Clear  LOF State:Clear

  Version info Firmware: 20090408, FPGA: 13, spm_count = 0

  Framing is ESF, Line Code is B8ZS, Clock Source is Line.

  CRC Threshold is 320. Reported from firmware  is 320.

  Data in current interval (257 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, 257 Unavail Secs

  Total Data (last 64 15 minute intervals):

     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 ecs

The phone company have said the circuits are okay.

I appreciate the help.

Regard,

Jose

Hi Jose,

Yes circuits are ok.

Let's check DSP.

please share the output of a show voice dsp group all.

Did you try to reload the gateway?

Please let me know 

Regards

Carlo

Please rate all helpful posts "The more you help the more you learn"

Carlo, The router has been reset. The DSP module have been replaced. Here is  the output.

DSP groups on slot 0:

dsp 1:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 16

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 16

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 2:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 16

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 16

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 3:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 16

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 16

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 4:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 6

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 6

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 5:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 0

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 0

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 6:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 0

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 0

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 7:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 0

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 0

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 8:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 0

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 0

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 9:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 0

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 0

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 10:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 0

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 0

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 11:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 0

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 0

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

dsp 12:

  State: UP, firmware: 26.3.6

  Max signal/voice channel: 16/16

  Max credits: 240

  num_of_sig_chnls_allocated: 0

  Transcoding channels allocated: 0

  Group: FLEX_GROUP_VOICE, complexity: FLEX

    Shared credits: 240, reserved credits: 0

    Signaling channels allocated: 0

    Voice channels allocated: 0

    Credits used (rounded-up): 0

 

 

DSP groups on slot 1:

This command is not applicable to slot 1

 

DSP groups on slot 2:

This command is not applicable to slot 2

0 DSP resource allocation failure

Regrads,

Jose

Here is the information you requested

VGW-SANANTONIO-3770#show voice call status
CallID CID ccVdb Port Slot/DSP:Ch Called # Codec MLPP Dial-peers
0x3AD 1A8C 0x49D45F80 0/3/0:23.23 0/1:1 *7864720345 g711ulaw 190/3
1 active call found

See attached

Thanks,

Jose

On voice port 0/3/0:23 and 0/3/1:23 add

bearer-cap speech 

compand-type ulaw

Let me know

Regards

Carlo

Please rate all helpful posts "The more you help the more you learn"

I added the options still gtting the crackling.

Regards,

Jose

Hey, 

15.1(4)MX is the latest available version for 2800/3800 series routers. An IOS upgrade and hence DSPware upgrade is no go.

You'll definitively need a PCM capture to isolate what the source of the craking noise is:

voice hpi capture buffer 1000000
voice hpi capture destination flash:pcm.dat

Once you have configured the above, make the test call and look for the
voice-port channel that the call comes in on. For instance, if the call
comes in on the voice-port X/Y/Z then you will need to execute the following
exec level command:

test voice port X/Y/Z pcm-dump caplog 7

Once the capture is complete, make sure to disable the capture by executing
the following:

test voice port X/Y/Z pcm-dump disable

Also get into the config mode and disable the two commands that you had
configured before:

no voice hpi capture buffer 1000000

no voice hpi capture destination flash:pcm.dat

Get the PCM capture so we can decode the audio.

HTH

~jorge

-- Jorge Armijo Please remember to rate helpful responses and identify helpful or correct answers.

I will have the Capture by today. i appreciate all the help.

Thanks,

Jose

Can you tell me how to load the PCM.dat so you can decoded. The location is not letting attach it,

Thanks,

Jose Luis Granda