[Blink] "Stalker Voice" when calling mobile numbers

Klaus Meßlinger blinkpro at ndom.net
Wed Mar 23 11:34:01 CET 2011


> Klaus,
> 
> Please paste the text from the Window -> Logs -> RTP window when you make the connection.
> 
> Adrian

Adrian,

this is the text when I call the mobile no. with *all* RTP options checked (in the order iLBC, G722, PCMU, PCMA, GSM, speex). 

New Audio session To: <sip:+49172xxxxxx at fritz.box>;tag=E7FE87323C9F6BDE
Audio RTP endpoints 192.168.178.24:50000 <-> 192.168.178.1:7090
Audio session established using "G722" codec at 16000Hz
Remote SIP User Agent is "AVM FRITZ!Box Fon WLAN 7320 (UI) 100.04.89 TAL (Nov 25 2010)"
2011-03-23 11:16:28 To: <sip:+49172xxxxxx at fritz.box>;tag=E7FE87323C9F6BDE: RTT=3 ms, packet loss=0.0%, jitter RX/TX=4/20 ms
2011-03-23 11:16:32 To: <sip:+49172xxxxxx at fritz.box>;tag=E7FE87323C9F6BDE: RTT=3 ms, packet loss=0.0%, jitter RX/TX=4/20 ms

This is when I get the stalker voice. (My mobile no. x'ed out manually. "fritz.box" is resolved to my router's IP address.)

When I choose G722 exclusively (all others unchecked), Blink dials, but quits as soon as I answer the mobile. No log shown, then.


And this is the log when I uncheck all but iLBC:

New Audio session To: <sip:+49172xxxxxx at fritz.box>;tag=3CAF83444BC50DC0
Audio RTP endpoints 192.168.178.24:50004 <-> 192.168.178.1:7090
Audio session established using "iLBC" codec at 8000Hz
Remote SIP User Agent is "AVM FRITZ!Box Fon WLAN 7320 (UI) 100.04.89 TAL (Nov 25 2010)"
2011-03-23 11:22:14 To: <sip:+49172xxxxxx at fritz.box>;tag=3CAF83444BC50DC0: RTT=3 ms, packet loss=0.0%, jitter RX/TX=3/9 ms

This is when I get the bad sound quality (but no stalker voice).

As I mentioned before, this is only for mobile connections.

A retest with my landline/VoIP handset - all options checked - resulted in this:

New Audio session To: <sip:+496xxxxxx at fritz.box>;tag=0532507FEDE418EA
Audio RTP endpoints 192.168.178.24:50002 <-> 192.168.178.1:7090
Audio session established using "G722" codec at 16000Hz
Remote SIP User Agent is "AVM FRITZ!Box Fon WLAN 7320 (UI) 100.04.89 TAL (Nov 25 2010)"
2011-03-23 11:28:32 To: <sip:+496xxxxxx at fritz.box>;tag=0532507FEDE418EA: RTT=2 ms, packet loss=0.0%, jitter RX/TX=4/20 ms
2011-03-23 11:28:32 To: <sip:+496xxxxxx at fritz.box>;tag=0532507FEDE418EA: RTT=2 ms, packet loss=0.0%, jitter RX/TX=4/20 ms
2011-03-23 11:28:42 To: <sip:+496xxxxxx at fritz.box>;tag=0532507FEDE418EA: RTT=2 ms, packet loss=0.0%, jitter RX/TX=3/11 ms

The result was also very poor (mixture of stalker/bad sound), but this can be due to the fact that I called out using one of my three numbers to call another one (Blink to handset).

Klaus


More information about the Blink mailing list