Hi voice team, a configured a SIP trunk on my router Cisco.
I´m using a CUCM 8.6 SCCP Phones -> H.323 -> Voice GW -> SIP Trunk -> Provider.
I configured the option " dtmf-relay rtp-nte" on dial-peer and works with majory number, but when i try to use DTMF with specific number, the number dont collect the digit.
I wonder why only a specific number does not accept dtmf?
If is only one number that does not work dtmf, could not be problem of your config.
Try to re-check the trunk config in your equipment.
dial-peer voice 1000 voip description ***OUTGOING CALLS TO ISP-PSTN*** destination-pattern 7.. session protocol sipv2 session target ipv4:10.113.0.2 voice-class codec 1 dtmf-relay rtp-nte fax-relay ecm disable no fax-relay sg3-to-g3 fax protocol pass-through g711ulaw no vad
The option "dtmf-relay rtp-nte" its appy on dial-peer.
If the problem occurs only for a specific number that you call. The problem may be in the equipment where this number answers.
In this case the best thing to do:
1- on gateway collect the following, debug ccsip messages on the gateway which is sip trunking to ITSP.
2- Place a test call to this specific number and try to send the DTMF
3- Collect the debug output
4- Take note of calling number / called number
With this you will be able to check which is the DTMF that is being negotiated on the far end, and if it's will be necessary to have a MTP to "translate" DTMF to this specific number.
Other question for you, are doing early offer or delay offer when calling to this number?
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