I am having choppy audio (breaks in audio) on the PSTN end of all calls between my SIP phone (Extensions) and any number on the PSTN through my PRI. This choppy audio is only on the PSTN end and not on the SIP end. However calls between Extensions (SIP to SIP) have clear audio on both ends.
I am making use of a Digium single span PRI card (TE133F) to connect to the E1 line. I am running FreePBX 18.104.22.168 and Asterisk 11.4.0
Consultation with Digium resolved that there was nothing wrong with the card. Please assist as this is really impacting my calls to PSTN numbers.