VOIP call, no more than 3 calls, why

[r-castanon]

I've a 1760-V router conected to a PBX (Harris), the problem is I can do only 3 calls at a time, the call 4 doesnt get started, Ive 4 DSP and using Codec g729, at least 8 call could be at the same time.

The main conf is:

.....

tdm clock E1 0/0 both export line

....

!

voice service voip

h323

!

!

voice class codec 2

codec preference 1 g729r8 bytes 50

!

...

!

controller E1 0/0

framing NO-CRC4

ds0-group 1 timeslots 1-15,17-19 type r2-digital dtmf dnis

cas-custom 1

country telmex

!

!

...

!

voice-port 0/0:1

echo-cancel coverage 32

cptone MX

timeouts wait-release 3

!

!

...

!

dial-peer voice 1490 voip

destination-pattern 7490

voice-class codec 2

session target ipv4:10.8.1.1

ip qos dscp cs3 media

ip qos dscp cs3 signaling

no vad

!

dial-peer voice 1491 voip

destination-pattern 7491

voice-class codec 2

session target ipv4:10.9.1.1

ip qos dscp cs3 media

ip qos dscp cs3 signaling

no vad

!

..

..

!

dial-peer voice 3000 pots

destination-pattern 30..

port 0/0:1

prefix 30

!

The version is:

Cisco IOS Software, C1700 Software (C1700-IPVOICE-M), Version 12.3(7)XR, RELEASE SOFTWARE (fc1)

I'll apreciate your hep

Rene Castañon (MEXICO)

[Chester Rieman]

Check here:

http://cisco.com/en/US/products/hw/routers/ps221/prod_configuration_guide09186a0080106d1c.html

Also check the dsp resource calculator on this page.

[r-castanon]

Thanks for your help, I'd read that document and also used the DSP calculator thats why I think that at least 8 calls could be running at the same time (Im using 4 DSP's, PVDM-256K-4 + PVDM-256K-12), the interface to PBX is VWIC-1MFT-E1 and configured as ds0-group 1 timeslots 1-15,17-24 type r2-digital dtmf dnis

WE can't use other Codec like g711 because remote partners have not enough bandwith available, but with 8 calls running at this main pint will be enough.

A'll appreciate if you have somethin else

Rene C

[rbradfield]

you might want to try some debugs to see what is happening try debug vpm dsp and debug vpm error for a start

HTH

Richard

[rbradfield]

you might want to try some debugs to see what is happening

try debug vpm dsp and debug vpm error for a start

[r-castanon]

This is what I found when debug vpm dsp & vpm error were enabled (Ican't find the code meaning):

LINV01#

LINV01#

Oct 14 18:42:13.678: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=29345 systime=16985830

LINV01#

Oct 14 18:42:41.095: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0xC timestamp=56813 systime=16988576

LINV01#

Oct 14 18:42:53.647: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=3857 systime=16989833

LINV01#

Oct 14 18:43:16.647: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0xC timestamp=26901 systime=16992137

LINV01#

Oct 14 18:43:25.467: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=35737 systime=16993020

LINV01#

Oct 14 18:45:32.375: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=30169 systime=17005570

LINV01#

Oct 14 18:45:48.839: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=46661 systime=17007218

LINV01#

Oct 14 18:45:56.539: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0xC timestamp=54373 systime=17007989

LINV01#

Oct 14 18:46:02.062: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=5907 systime=17008542

Oct 14 18:46:02.210: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=60049 systime=17008557

LINV01#

Oct 14 18:46:03.867: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=61628 systime=17008723

LINV01#

Oct 14 18:46:05.940: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=63785 systime=17008930

LINV01#

Oct 14 18:46:10.086: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=2292 systime=17009345

LINV01#

Oct 14 18:46:14.740: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=6976 systime=17009811

LINV01#

Oct 14 18:46:16.645: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=8888 systime=17010002

LINV01#

Oct 14 18:46:28.479: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=20738 systime=17011187

LINV01#

Oct 14 18:46:41.777: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=6703 systime=17012518

LINV01#

Oct 14 18:46:43.790: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=6743 systime=17012720

LINV01#

Oct 14 18:46:45.803: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=14951 systime=17012921

LINV01#

Oct 14 18:46:47.784: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x0 timestamp=6823 systime=17013119

LINV01#

Oct 14 18:46:48.804: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=41066 systime=17013222

LINV01#

Oct 14 18:47:08.033: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=60421 systime=17015147

LINV01#

Oct 14 18:47:09.034: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=61425 systime=17015247

LINV01#

Oct 14 18:47:16.705: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0xC timestamp=3474 systime=17016015

LINV01#

Oct 14 18:47:28.692: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=15486 systime=17017215

LINV01#

Oct 14 18:47:37.388: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0xC timestamp=24206 systime=17018086

LINV01#

Oct 14 18:47:47.597: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x8 timestamp=34410 systime=17019109

[eyabane]

i have seen something similar to this once, and it had to do with a bad dsp chip. the system doesn't always tell you when a dsp chip goes bad, it just limits you abiliy to place calls over those dsps. there are dsp test commands (some are actually hidden) that will run some kind of loopback test on all your dsp chips in the system. just remember to have " term mon" on if you are doing this remotely.

let's know how it turns out.

E.

[sriram.g]

Hi,

Try the voice-card command under global config and add the codec complexity as medium under that. This may help.

Thanks

GS