I have 2 SPA3102s in 2 different countries connected via Pennytel. Here's my setup
Country A (9Mbps Cable Connection)
Country B (256+128 DSL connection)
1. (A) Line 1 calling (B) Line 1: (A) hears (B) clearly. (B) occasionally hears choppy audio from (A)
2. (A) Line 1 calling (B) PSTN, initiates a PSTN call at (B): PSTN dial tone is very soft, almost inaudible. (A) hears (B) but is very soft. (B) hears (A) but is very soft or choppy.
So it seems that (B)'s downstream audio is at times choppy regardless of call origin.
Network Jitter Level for both SPAs set to High; Jitter Buffer Adjustment set to Up and Down.
Tried to change codec to G729a for less bandwidth for PSTN line but read somewhere that PSTN calls always revert to G711, which it did. (then why allow me to change the codec...).
Appreciate any help...