From time to time (no clear way to systematically produce the problem),
the received audio stops in Qtel (while the "RX" indicator is still
green). I have found that momentarily hitting the PTT makes the audio
restart. When it starts behaving like this, I usually have to hit the PTT
every 5-10 sec until the end of the ongoing reception.
This is a problem that I have seen with EchoLink and that I have
successfully worked around using a feature they call "Auto Sample Rate
Compensation". Herebelow is what the documentation says about.
It just happens that I am plagued with a sound card that has the problem
described in this documentation, so I was wondering if we could eventually
get a similar feature in Qtel.
Auto Sample Rate Compensation:
Check this box to allow EchoLink to compensate automatically for
variations among sound cards. Some sound cards may operate as much as
2% away from the desired sample rate, which can cause periodic gaps in
received audio, even over a perfect Internet connection. When this
feature is enabled, EchoLink detects this problem and inserts or
removes packets to compensate for it dynamically. You might perceive
this compensation as a slight skip or echo periodically.