Author Topic: Audio breaking  (Read 1876 times)


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Audio breaking
« on: 2011-03-04, 21:33:20 »
After some learning curve explore in earlier posts was able to get all items to work in remote site and home site. The configuration is as follows:
Remote site TS480 Radion connected to a 3G router 7.2Mb always on. Good connection to 3G network (0.5km)
Control site TS-480 Control panel connected to a cable router 2.5Mb
I can get the radio working and made some qsos. My problems are as follows:-
1.   The received audio is breaking every 3ced and not smooth.
2.   When I am transmitting and releasing the PTT the receive audio is like totally distorted for 2-3sec and only then i can here the station.
3.   When transmitting some stations are telling me my audio is breaking.
I pinged the remote site from the control unit router for your ref. Also the radio/control configuration is  RX Jitter buffer 4, Jitter delay 3,  audio packet 20ms

What is the next step?



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Re: Audio breaking
« Reply #1 on: 2011-03-04, 21:37:10 »
Hi Ziv,

I personally have never been able to get RemoteRig to work on
any 3G network in Germany. I suspect they somehow block SIP, even
with a non-standard port. VoIP is not allowed here on these networks,
so they must have put some extra effort in to block it. This may also
be your problem.

Mitch DJ0QN / K7DX


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Re: Audio breaking
« Reply #2 on: 2011-03-04, 23:14:31 »

1. As you can see you have pingtimes up to more than 3 seconds, that's nothing to do about it it will be breaks in the audio.

2. Some 3G networks take a while before they starts sending continous RTP packets, If you turn on Continuously RTP tx in the Radio-RRC this problem will probably be solved.

3. Set codec to 0 in both ends to save bandwidth, and increase the jitter buffersize and jitterbuffer delay in both ends, then the system vill be more tolerant against jitter. But those 3 seconds latencys will remains as breaks.

I recommended changing to ADSL.

73 de mike