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Cisco CUBE dtmf and lti

pekoms
Beginner
Beginner

I am getting a some new cubes ready and during testing for dtmf I noticed the inbound call leg from sip itsp was always Inband and toward the cloud pbx (sip) was rtp-nte as configured.

Both inbound and outbound dial peers were configured with dtmf-relay rtp-nte.

While testing IVR I could not see any digits at all and IVR would not work.

After I added the LTI configuration:

dspfarm profile 1 transcode

codec g711ulaw

maximum sessions 48

associate application CUBE

---

Now IVR works.

Questions, is there a better way than LTI to get dtmf to work?

Is the transcoder only invoked when it is needed?

I expect to have approx 400 calls during peak time so am wondering if during the call the transcoder is used and then released?

Thanks

1 Reply 1

b.winter
VIP
VIP

Hi,

as long as one of the 2 connected parties doesn't support the DTMF method of the other one, then you will always need a device, which does the DTMF conversion. In your case it's CUBE.

 

The transcoding resource is only used, as long as a call lasts, which needs a transcoding resource.

 

In your case, because you have this DTMF problem, probably every call will need a transcoding resource.

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