Changes between Initial Version and Version 1 of audio-check-rx-rtp


Ignore:
Timestamp:
Dec 5, 2006 2:58:20 PM (15 years ago)
Author:
bennylp
Comment:

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  • audio-check-rx-rtp

    v1 v1  
     1= Checking if RTP Packets are Received = 
     2 
     3Use pjsua's '''{{{dq}}}''' (dump quality of current call) command from pjsua's menu to check that RTP packets are indeed received by pjsua. Use this command after the media is established, of course. 
     4 
     5Also make sure that current call selected is the call that you want. You can change current call with ''']''' and '''[''' command. 
     6 
     7Once correct call is selected and media is established, you can invoke '''{{{dq}}}''' command like below: 
     8 
     9{{{ 
     10>>> dq 
     11 14:54:37.008        pjsua.c 
     12  [CONFIRMED ] To: sip:user@localhost;tag=1857bde149264e2986c4aac1a26f5866 
     13    Call time: 00h:00m:53s, 1st res in 1071 ms, conn in 1191ms 
     14    #0 speex @16KHz, sendrecv, peer=192.168.0.66:4000 
     15       RX pt=103, stat last update: 00h:00m:01.753s ago 
     16          total 1.7Kpkt 72.2KB (127.2KB +IP hdr) @avg=10.6Kbps 
     17          pkt loss=0 (0.0%), dup=0 (0.0%), reorder=0 (0.0%) 
     18                (msec)    min     avg     max     last 
     19          loss period:   0.000   0.000   0.000   0.000 
     20          jitter     :   0.000   5.506 227.000   9.812 
     21       TX pt=103, ptime=20ms, stat last update: 00h:00m:07.871s ago 
     22          total 0pkt 0B (0B +IP hdr) @avg 0bps 
     23          pkt loss=0 (-1.$%), dup=0 (-1.$%), reorder=0 (-1.$%) 
     24                (msec)    min     avg     max     last 
     25          loss period:   0.000   0.000   0.000   0.000 
     26          jitter     :   0.000   0.000   0.000   0.000 
     27      RTT msec       :   0.274   0.616   1.233   1.233 
     28}}} 
     29 
     30Pay attention to this part of the report: 
     31 
     32{{{ 
     33       RX pt=103, stat last update: 00h:00m:01.753s ago 
     34          total 1.7Kpkt 72.2KB (127.2KB +IP hdr) @avg=10.6Kbps 
     35}}} 
     36 
     37as it shows the number of RTP packets received since the media is established.  
     38 
     39Make sure that the number makes sense for the duration of the call (without VAD, normally we'll have about 50 packets received per second). 
     40 
     41If the number is zero, then we're not receiving any RTP packets. There could be problems with the network, or NAT, or firewall, or something else, which is not related to the sound device. 
     42 
     43If the number is too low, it's possible that remote is transmitting silence frames, which of course will be rendered as silence in the speaker. 
     44