Sometimes we unfortunately still have legacy requirements to support ISDN that still need to upgrade to SIP Trunking. DTMF and even fax tones can be a pain… Read more “Troubleshooting DTMF from ISDN PSTN”
Tag: dtmf
DTMF Interworking and the MTP
I came across this a while back when deep diving MTP when preparing for the lab. I’ve pretty much got it down now, but I keep coming… Read more “DTMF Interworking and the MTP”
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