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36
Replies

DTMF problem on CME router

kiranoddiraju
Level 1
Level 1

Guys,

I have a 2811 CME gateway connect to the Telco via SIP. I have no problem with inbound and outbound calls, they work fine but I have problem with DTMF. The Telco says they are not receiving any digits from our side. I have the below dial-peer config on my side, please let me know what I need to change...

dial-peer voice 9 voip

description <<< Outbound to Telco >>>

translation-profile outgoing outgoing_digits

destination-pattern 9.T

voice-class codec 1

session protocol sipv2

session target ipv4:xxx.xxx.xxx.xxx

dtmf-relay sip-notify

no vad

!

AE-BAH-2811-01(config-dial-peer)#do sh ver

Cisco IOS Software, 2800 Software (C2800NM-SPSERVICESK9-M), Version 12.4(15)T8, RELEASE SOFTWARE (fc3)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2008 by Cisco Systems, Inc.

Compiled Mon 01-Dec-08 15:28 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

AE-BAH-2811-01 uptime is 2 days, 19 hours, 19 minutes

System returned to ROM by Reload Command

System restarted at 19:53:18 AE Tue Jan 20 2009

System image file is "flash:c2800nm-spservicesk9-mz.124-15.T8.bin"

Cheers,

K

1 Accepted Solution

Accepted Solutions

If SIP provider has changed, send the new messages log and we can confirm.

View solution in original post

36 Replies 36

paolo bevilacqua
Hall of Fame
Hall of Fame

Hi,

first you check what's happening with "debug ccsip message" and "term mon".

Then, it might be that the ITSP doesn't support dtmf relay and they want in-band.

Generally speaking, you can have reliable dtmf in rtp even with g.729 and no jitter.

Hi K,

Do not use SIP notify with your SIP provider. The only place I have seen SIP notify work is CUE.

Please try replacing it with rtp-nte, as that is the standard most providers use.

hth,

nick

Oh, Nick put in less words what I meant to say :)

5 for him!

Have tried changing that to rtp-nte but no luck. The Telco gave me an IVR number to test, I dialed the digits when prompted but the IVR is not recognising my digits. The Telco phoned my from his mobile and when the call is answered he asked me to dial digits, I could see from the trace my gateway was trying to send some digits. So it must be one-way...

I am using g711ulaw codec

please advice based on this info...

Many thanks for your quick response guys...

Can you debug ccsip messages and paste the 200 OK that the provider sends back?

or just post the ccsip messages log.

-nick

Hi Nick,

SIP trace attached...

many thanks,

Kiran

Hi Kiran,

Try removing all of your DTMF options. Your provider doesn't appear to be supporting any OOB DTMF, so you will need to send it in-band.

hth,

nick

hi nick,

I have removed all dtmf options on my side, but still no luck.

dial-peer voice 9 voip

description <<< Outbound to Telco >>>

translation-profile outgoing outgoing_digits

destination-pattern 9.T

voice-class codec 1

session protocol sipv2

session target ipv4:11.11.111.1

no vad

!

Try making the call as g.711 ?

Hi Kiran,

You may need to configure a transcoder on CME for it to support putting in-band digits in.

!

voice-card 0

dspfarm

dsp services dspfarm

!

sccp ccm 10.1.103.76 identifier 1 version 4.1

sccp local interface FastEthernet0/0

!

sccp ccm group 1

associate ccm 1 priority 1

associate profile 1 register mydsps

!

dspfarm profile 1 transcode

codec g711ulaw

maximum sessions 4

associate application SCCP

no shutdown

!

sccp

!

telephony-service

sdspfarm units 1

sdspfarm transcode sessions 4

sdspfarm tag 1 mydsps

That's a pretty close config to what you'll need.

hth,

nick

And again!

ahhhaaa...dsp's....let me check with the guy who has installed this router if it has got any dsp's...

how do i check if the voice router has dsp's?

show diag, or inability to configure.

I am not able to reach the guy who installed the router, but I suspect there are no dsp's as I can see there there is a FXS card on the router but no voice-port in the config.

Quesion: if the router doesn't have dsp's, does it still support DTMF?

AE-BAH-2811-01#sh diag

Slot 0:

C2811 Motherboard with 2FE and integrated VPN Port adapter, 2 ports

Port adapter is analyzed

Port adapter insertion time unknown

EEPROM contents at hardware discovery:

PCB Serial Number : FOC1249117X

Hardware Revision : 1.0

Top Assy. Part Number : 800-26920-05

Board Revision : A0

Deviation Number : 0

Fab Version : 04

RMA Test History : 00

RMA Number : 0-0-0-0

RMA History : 00

Processor type : 87

Hardware date code : 20081203

Chassis Serial Number : FCZ125170XU

Chassis MAC Address : 0021.a054.53c8

MAC Address block size : 24

CLEI Code : COMWL10CRA

Product (FRU) Number : CISCO2811

Part Number : 73-10258-05

Version Identifier : V06

EEPROM format version 4

EEPROM contents (hex):

0x00: 04 FF C1 8B 46 4F 43 31 32 34 39 31 31 37 58 40

0x10: 03 E7 41 01 00 C0 46 03 20 00 69 28 05 42 41 30

0x20: 88 00 00 00 00 02 04 03 00 81 00 00 00 00 04 00

0x30: 09 87 83 01 32 6A 33 C2 8B 46 43 5A 31 32 35 31

0x40: 37 30 58 55 C3 06 00 21 A0 54 53 C8 43 00 18 C6

0x50: 8A 43 4F 4D 57 4C 31 30 43 52 41 CB 8F 43 49 53

0x60: 43 4F 32 38 31 31 20 20 20 20 20 20 82 49 28 12

0x70: 05 89 56 30 36 20 D9 02 40 C1 FF FF FF FF FF FF

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