Both the OBi202 and my Asterisk/FPBX support iLBC although it’s disabled on the OBi by default, so I’m working on figuring out how to enable that in my OBi’s XML config file now (it’s not intuitive) and will test it soon.
rtp debug results (162.251.191.74 is the endpoint in question; the other IP is presumably the Flowroute media endpoint for this call):
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021566, ts 1812093587, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032023, ts 1812093424, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032024, ts 1812093584, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063080, ts 1817673249, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020716, ts 1817671968, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021567, ts 1812093747, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032025, ts 1812093744, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063081, ts 1817673409, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020717, ts 1817672128, len 000170)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063082, ts 1817673569, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020718, ts 1817672288, len 000170)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063083, ts 1817673729, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020719, ts 1817672448, len 000170)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063084, ts 1817673889, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020720, ts 1817672608, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021568, ts 1812093907, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021569, ts 1812094067, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021570, ts 1812094227, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021571, ts 1812094387, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032026, ts 1812093904, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032027, ts 1812094064, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032028, ts 1812094224, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032029, ts 1812094384, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063085, ts 1817674049, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020721, ts 1817672768, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021572, ts 1812094547, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032030, ts 1812094544, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063086, ts 1817674209, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020722, ts 1817672928, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021573, ts 1812094707, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021574, ts 1812094867, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021575, ts 1812095027, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021576, ts 1812095187, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021577, ts 1812095347, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032031, ts 1812094704, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032032, ts 1812094864, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032033, ts 1812095024, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032034, ts 1812095184, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032035, ts 1812095344, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063087, ts 1817674369, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063088, ts 1817674529, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063089, ts 1817674689, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063090, ts 1817674849, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063091, ts 1817675009, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063092, ts 1817675169, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020723, ts 1817673088, len 000170)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020724, ts 1817673248, len 000170)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020725, ts 1817673408, len 000170)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020726, ts 1817673568, len 000170)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020727, ts 1817673728, len 000170)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020728, ts 1817673888, len 000170)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020729, ts 1817674048, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021578, ts 1812095507, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032036, ts 1812095504, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021579, ts 1812095667, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032037, ts 1812095664, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063093, ts 1817675329, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021580, ts 1812095827, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032038, ts 1812095824, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063094, ts 1817675489, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020730, ts 1817674208, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021581, ts 1812095987, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032039, ts 1812095984, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063095, ts 1817675649, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020731, ts 1817674368, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021582, ts 1812096147, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032040, ts 1812096144, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063096, ts 1817675809, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020732, ts 1817674528, len 000170)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063097, ts 1817675969, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020733, ts 1817674688, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021583, ts 1812096307, len 000160)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021584, ts 1812096467, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032041, ts 1812096304, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032042, ts 1812096464, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063098, ts 1817676129, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020734, ts 1817674848, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021585, ts 1812096627, len 000160)
Sent RTP packet to 74.120.93.196:25516 (type 00, seq 032043, ts 1812096624, len 000160)
Got RTP packet from 74.120.93.196:25516 (type 00, seq 063099, ts 1817676289, len 000160)
Sent RTP packet to 162.251.191.74:37887 (type 00, seq 020735, ts 1817675008, len 000170)
Got RTP packet from 162.251.191.74:37887 (type 00, seq 021586, ts 1812096787, len 000160)
Thanks again for the help, especially as it’s OT for this thread!