DTMF Over H323 Trunk

[Sandaruwan]

Hi All,

I am trying to interconnect NEC SV9100 with Mitel MXONE via an H323 trunk, following are the configuration commands i used on the Mitel side,


rocai:rou=2,sel=7110000000000010,trm=5,dist=30,disl=128,traf=03151515,serv=2110000001,sig=511110100091,bcap=001100;
rodai:rou=2,type=tl65,varc=00000111,vari=00000011,varo=00000000;
roeqi:rou=2,tru=1-1&&1-4;
roedp:rou=2,tru=all;
roddi:dest=11,srt=1,rou=2,adc=1606100000000250005000000000,ip=xx.xx.xx.xx;

Calls are working fine on both sides but i am not getting DTMF during the call from Mitel MXONE to SV9500, in the Wireshark trace i can see the user input in H245 protocol, but the information inside the packet is missing.

Please refer attached image for the Wireshark trace, please let me know how to manage the DTMF in Mitel side for H323 trunks.

[URL unfurl="true"]https://res.cloudinary.com/engineering-com/image/upload/v1630153489/tips/DTMF_in_H323_fn5pll.pdf[/url],

Thanks
Dinusha bandara

 

[pviorel]

check ICAT for analog extensions
D5 = Type of signalling
0 FSK
1 DTMF
Type of standard
0 ETSI
2 Bellcore