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Fast Busy on answer, call dropped on dial out

Hi,

We are having a problem with a 2821 and H323. When you call in, the phone rings but the call is dropped on answer, with the internal phone ringing fast busy. On call-out, the other end rings once then goes to fast busy.

I suspect a DSP issue. There are 2 32 channel PVDM2 cards on board, no no issue there. Is there some extra step to enable DSP use on this router? We normally use 2811's which I thought were nearly identical.

Configuration is below, thanks in advance.

David Martin

network-clock-participate wic 0

network-clock-select 1 E1 0/0/0

!

isdn switch-type primary-net5

!

voice-card 0

no dspfarm

!

voice call send-alert

voice call convert-discpi-to-prog

voice rtp send-recv

!

voice service voip

h323

!

voice class codec 1

codec preference 1 g711ulaw

codec preference 2 g711alaw

codec preference 3 g729r8

!

voice class h323 1

h225 timeout tcp establish 3

!

controller E1 0/0/0

pri-group timeslots 1-8,16

!

!

interface Serial0/0/0:15

no ip address

no logging event link-status

isdn switch-type primary-net5

isdn incoming-voice voice

no cdp enable

!

voice-port 0/0/0:15

no vad

cptone GB

!

dial-peer voice 9 pots

destination-pattern 9T

progress_ind setup enable 3

progress_ind alert enable 8

progress_ind progress enable 8

progress_ind connect enable 8

direct-inward-dial

port 0/0/0:15

!

dial-peer voice 100 voip

preference 1

destination-pattern 66101...

modem passthrough nse codec g711ulaw

voice-class codec 1

voice-class h323 1

session target ipv4:xxx.xxx.xxx.xxx

incoming called-number .

dtmf-relay h245-alphanumeric

fax rate disable

no vad

!

dial-peer voice 200 voip

preference 2

destination-pattern 66101...

modem passthrough nse codec g711ulaw

voice-class codec 1

voice-class h323 1

session target ipv4:yyy.yyy.yyy.yyy

incoming called-number .

dtmf-relay h245-alphanumeric

fax rate disable

no vad

!

num-exp 251... 66101...

1 REPLY
Blue

Re: Fast Busy on answer, call dropped on dial out

if you do require DSPs then YES, you are missing quite a bit of DSP configuration info.

please see the following link for more info on DSP configuration for CME/IOS:

http://www.cisco.com/en/US/products/sw/voicesw/ps4625/products_configuration_guide_chapter09186a00806a8015.html

CCM SCCP Bound IOS DSPs -

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_configuration_example09186a0080334294.shtml

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