CUBE Local Transcoding Interface (LTI) works one way

Evgeny Andreev — Sun, 17 Mar 2019 13:35:12 GMT

Hello!

DTMF ISSUE - Service provider supports only in-band dtmf in voice channel, so i need to transcode it to rfc2833 on CUBE

SP - g711alaw SIP in-band dtmf - CUBE - g711alaw SIP rfc2833 dtmf - INTERNAL NETWORK

Config of CUBE:

voice-card 0 LTI Transcoding
dspfarm
dsp services dspfarm

dspfarm profile 1 transcode
codec g711ulaw
codec g711alaw
maximum sessions 32
associate application CUBE

dial-peer voice 13 voip
destination-pattern . TO INTERNAL NETWORK
session protocol sipv2
session target ipv4:172.28.241.252
dtmf-relay rtp-nte
codec g711alaw
no vad

dial-peer voice 22 voip
translation-profile outgoing 22
destination-pattern 7241. TO SP
session protocol sipv2
session target dns:xx.yy
voice-class sip localhost dns:xx.yy
codec g711alaw
clid network-number 79265254494
no vad

dial-peer voice 31 voip
description idc 9265254494
translation-profile incoming 30 INCOMING PEER FOR CALLS FROM SP TO INTERNAL NETWORK (FOR NUMBER TRANSLATION)
incoming called-number 79265254494
codec g711alaw

i configure local transcodin interface (LTI) and it works fine when calls come from SP to internal network, i can see that LTI works with incoming call and DTMF works

#sh dspfarm all

0 1 37.3.6 UP 1 USED xcode 1 127 1468 1510
0 1 37.3.6 UP 1 USED xcode 1 126 1471 1468
0 1 37.3.6 UP N/A FREE xcode 1 - - -
0 1 37.3.6 UP N/A FREE xcode 1 - - -
0 1 37.3.6 UP N/A FREE xcode 1 - - -

But when i perform outgoing call to SP there is no transcoding, LTI doesn`t catch it

0 1 37.3.6 UP N/A FREE xcode 1 - - -
0 1 37.3.6 UP N/A FREE xcode 1 - - -
0 1 37.3.6 UP N/A FREE xcode 1 - - -
0 1 37.3.6 UP N/A FREE xcode 1 - - -
0 1 37.3.6 UP N/A FREE xcode 1 - - -

Need help

topic CUBE Local Transcoding Interface (LTI) works one way in IP Telephony and Phones

CUBE Local Transcoding Interface (LTI) works one way