Quote Originally Posted by Russell View Post
Here's the experiment with the HT-502:

Dial 919-863-1200. The recording will ask for the home or office line that has remote access service. Now dial 919-231-4525.

At this point if I'm using the HT-502 I hear something garbled, if at all. With the RT31P2 the audio is perfect as the recording asks you to confirm it and enter a PIN. Just curious if this is just me or if this happens to others with a Grandstream.
I have a Grandstream HT-502 in front of the router, and when I dialed the above numbers the audio was perfectly clear. No garble, no distortion. After dialing, the AVR system repeated the number back, and asked for my credentials.

Gary Sanders