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New Member

DTMF issue on CUBE with H.323-SIP IW

Hi,

I have an issue with DTMF tranfer on Cisco UBE with H.323 to SIP interworking.
On H.323 side (H.323 Trunk service from telco operator) DTMF comes ralayed using H.245 Signal method. One H.245 MSC userInput messages for each digit without information of duration.
CUBE wait almost 4 seconds (default duration for this type of relay) before sending apprioprate RTP-NTE packets to SIP side.

020392: *Feb 24 22:22:14.883: h245_decode_one_pdu: more_pdus = 0, bytesLeftToDecode = 5
020393: *Feb 24 22:22:14.883: H245 MSC INCOMING ENCODE BUFFER::= 6D81020640
020394: *Feb 24 22:22:14.883:
020395: *Feb 24 22:22:14.883: H245 MSC INCOMING PDU ::=

value MultimediaSystemControlMessage ::= indication : userInput : signal :
    {
      signalType "2"
    }

020396: *Feb 24 22:22:14.883: h245_decode_one_pdu: H245ASNDecodePdu rc = 0, bytesLeftToDecode = 0
020397: *Feb 24 22:22:14.883: h245_decode_one_pdu: Read Pkt body: more_pdus:0 rc:0 asn_rc:0

020398: *Feb 24 22:22:18.683:          s=DSP d=VoIP payload 0x65 ssrc 0x842B4540 sequence 0x2297 timestamp 0x78C63BF7
020399: *Feb 24 22:22:18.683:          Pt:101    Evt:2       Pkt:04 00 00  <Snd>>>
020400: *Feb 24 22:22:18.683:          s=DSP d=VoIP payload 0x65 ssrc 0x842B4540 sequence 0x2298 timestamp 0x78C63BF7
020401: *Feb 24 22:22:18.683:          Pt:101    Evt:2       Pkt:04 00 00  <Snd>>>
020402: *Feb 24 22:22:18.683:          s=DSP d=VoIP payload 0x65 ssrc 0x842B4540 sequence 0x2299 timestamp 0x78C63BF7

From "deb voip ipipgw" I found out that CUBE wait for H.245 MSC userInput : signalUpdate message before sending RTP-NTE packets.

020559: *Feb 24 23:05:23.899: //1419773/306130613030/H323/cch323_ip_ip_recv_digit_sm: H323-H323 non RTP-NTE IW or H323-SIP, start waiting for SigUpd
020560: *Feb 24 23:05:27.699: //1419773/306130613030/H323/cch323_ip_ip_recv_digit_timer_expired: timer expired waiting for SigUpd, send digit end

Somebody knows how to reduce this delay?

Thanks in advanced. Greg.

Everyone's tags (2)
4 REPLIES
New Member

DTMF issue on CUBE with H.323-SIP IW

Hi,

Did you maybe manage to solve this? Having the same issue

Br,

Goran

New Member

DTMF issue on CUBE with H.323-SIP IW

Hi Goran,

Unfortunately I did not resolve this issue, so I had to change the solution. I do not use H.323-SIP IW.

Best Regards. Greg.

DTMF issue on CUBE with H.323-SIP IW

Do you have already seen this doc?

https://supportforums.cisco.com/docs/DOC-3447

Regards.

New Member

DTMF issue on CUBE with H.323-SIP IW

Hi,

Tried it, unfortunately didn't help

tnx anyway

BR

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