Here is our problem with the SPA2102. Please take a look at it. If you have a workable solution let me know.
When I make an outbound call from the Linksys SPA2102 to any number the any number has the call dropped after the call has been connected for roughly 23 seconds. From the phone Linksys SPA2102 the call thinks it is still going and doesn't seem to end.
I have included my conversation regarding the issue with our Metaswitch CSE. I have also included a wireshark capture of the call from between the SBG901 and the SPA2102 and a call trace of a dropped call from the Metaswitch. Firmware used in the test is 5.2.10, though the SPA2102s in the field are all 5.1.12 which is what is certified with our version of the Metaswitch. The Motorola modem in this case is running the most current version of firmware available from Motorola.
From our Metaswitch is sent a re-invite, which is done every 30 seconds from the initial invite (to verify the call is up and still connected), and the device sends us a 481 Does not exist, so the switch kills the call.
Can you send the configuration of the SPA2102? I'm interested to see the RTP Packet Size parameter on tab (provide this value instead of the whole config file please). If it is set to 0.030, please change it to 0.020 and apply changes (unit should reboot). Try again the call. May be a mismatch of packetization time.
GMT-06:00 -3 -3 no no Yes Yes 220.127.116.11 18.104.22.168 very high disable no no no no no no no no no Sinusoid 25 16 70 440@-10 1 Yes Yes Yes Yes Yes 2 Parallel pool.ntp.org Yes Yes 10 3600 14400 Yes Yes 5 2 $VERSION ($MA) $VERSION ($MA) application/dtmf-relay application/hook-flash No No .5 4 5 32 32 32 32 32 240 30 15 7200 16384 16482 0.030 0 0 100 101 98 97 96 99 NSE telephone-event PCMU PCMA G726-16 G726-24 G726-32 G726-40 G729a G729ab G723 No No No No No No No 15 No 30 Yes $NOTIFY $PROXY 0x68 0xb8 No Yes Yes none Yes Yes Yes Yes No Yes 600 no no no no No No No No Yes No No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes G711u Yes ReINVITE AVT Yes Yes No Forward Forward Forward No 1 0 New VM Arrives No Yes No 30 yes $NOTIFY $PROXY 0x68 0xb8 no no no no no no no no no no ReINVITE Yes 3 #98 #99 #90 #91 #92 #93
That is pretty much what we have configured, plus of course line information, codec, and a couple of other things. I did try manually changing the RTP Packet Size to what you recommended, but it was the same problem. The ATA itself doesn't realize that the call dropped and just hangs in silence.
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