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Audio Distortion with PSTN

Faisal.Saoud
Level 3
Level 3

I captured the traffic on a VG and while we decoded the traffic and try to hear both audio, I noticed the audio that comes from Cisco phone had choppy.

 

The scenario was Cisco Phone - CUCM - SIP Trunk - VG - SIP Trunk - ITSP - Mobile Phone

 

Does anyone know what may be the reason?

1 Reply 1

b.winter
VIP
VIP

Either the phone is broken or the network is dropping audio packets, probably because of no / bad QoS settings and / or network congestion.