WARNING[1732][C-00000eb0] chan_sip.c: Can't send 10 type frames with SIP write

I have a customer running on FreePBX 12.0.76.6 with Asterisk (Ver. 13.4.0)
They’ve been a customer for 5 years and lately they are dropping calls.
All of the phones are Cisco SPA508G phones with 7.6.2f firmware.
We have replaced the comcast modem with a motorola model, and a TP link router, and that didn’t change the problem.
We tried using a verizon hot spot as the ISP and the same problems continue.
It happens on incoming and outgoing calls, which we have a different incoming and outgoing SIP carrier.
So we have changed Internet services, and 2 different carriers.
Around the time of the dropped call, these are the logs.

[2021-06-03 11:51:18] VERBOSE[1282][C-00000e8f] netsock2.c: Using SIP RTP TOS bits 184
[2021-06-03 11:51:18] VERBOSE[1282][C-00000e8f] netsock2.c: Using SIP RTP CoS mark 5
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:1] Set(“SIP/ktel-pbx-001-00000ae1”, “__DIRECTION=INBOUND”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:2] Gosub(“SIP/ktel-pbx-001-00000ae1”, “sub-record-check,s,1(in,2487145547,yes)”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:1] GotoIf(“SIP/ktel-pbx-001-00000ae1”, “0?initialized”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:2] Set(“SIP/ktel-pbx-001-00000ae1”, “__REC_STATUS=INITIALIZED”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:3] Set(“SIP/ktel-pbx-001-00000ae1”, “NOW=1622735478”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:4] Set(“SIP/ktel-pbx-001-00000ae1”, “__DAY=03”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:5] Set(“SIP/ktel-pbx-001-00000ae1”, “__MONTH=06”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:6] Set(“SIP/ktel-pbx-001-00000ae1”, “__YEAR=2021”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:7] Set(“SIP/ktel-pbx-001-00000ae1”, “__TIMESTR=20210603-115118”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:8] Set(“SIP/ktel-pbx-001-00000ae1”, “__FROMEXTEN=unknown”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:9] Set(“SIP/ktel-pbx-001-00000ae1”, “__MON_FMT=wav”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:10] NoOp(“SIP/ktel-pbx-001-00000ae1”, “Recordings initialized”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:11] ExecIf(“SIP/ktel-pbx-001-00000ae1”, “0?Set(ARG3=dontcare)”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:12] Set(“SIP/ktel-pbx-001-00000ae1”, “REC_POLICY_MODE_SAVE=”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:13] ExecIf(“SIP/ktel-pbx-001-00000ae1”, “0?Set(REC_STATUS=NO)”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:14] GotoIf(“SIP/ktel-pbx-001-00000ae1”, “2?checkaction”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Goto (sub-record-check,s,17)
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:17] GotoIf(“SIP/ktel-pbx-001-00000ae1”, “1?sub-record-check,in,1”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Goto (sub-record-check,in,1)
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:1] NoOp(“SIP/ktel-pbx-001-00000ae1”, “Inbound Recording Check to 2487145547”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:2] Set(“SIP/ktel-pbx-001-00000ae1”, “FROMEXTEN=unknown”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:3] ExecIf(“SIP/ktel-pbx-001-00000ae1”, “10?Set(FROMEXTEN=2482368305)”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:4] Gosub(“SIP/ktel-pbx-001-00000ae1”, “recordcheck,1(yes,in,2487145547)”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:1] NoOp(“SIP/ktel-pbx-001-00000ae1”, “Starting recording check against yes”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:2] Goto(“SIP/ktel-pbx-001-00000ae1”, “yes”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Goto (sub-record-check,recordcheck,9)
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:9] ExecIf(“SIP/ktel-pbx-001-00000ae1”, “0?Return()”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:10] Set(“SIP/ktel-pbx-001-00000ae1”, “__REC_POLICY_MODE=YES”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:11] Goto(“SIP/ktel-pbx-001-00000ae1”, “startrec”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Goto (sub-record-check,recordcheck,16)
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:16] NoOp(“SIP/ktel-pbx-001-00000ae1”, “Starting recording: in, 2487145547”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:17] Set(“SIP/ktel-pbx-001-00000ae1”, “AUDIOHOOK_INHERIT(MixMonitor)=yes”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:18] Set(“SIP/ktel-pbx-001-00000ae1”, “__CALLFILENAME=in-2487145547-2482368305-20210603-115118-1622735478.48929”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:19] MixMonitor(“SIP/ktel-pbx-001-00000ae1”, “2021/06/03/in-2487145547-2482368305-20210603-115118-1622735478.48929.wav,ai(LOCAL_MIXMON_ID),”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:20] Set(“SIP/ktel-pbx-001-00000ae1”, “__MIXMON_ID=0x7f3d7c013390”) in new stack
[2021-06-03 11:51:18] VERBOSE[1312][C-00000e8f] app_mixmonitor.c: Begin MixMonitor Recording SIP/ktel-pbx-001-00000ae1
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:21] Set(“SIP/ktel-pbx-001-00000ae1”, “__RECORD_ID=SIP/ktel-pbx-001-00000ae1”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:22] Set(“SIP/ktel-pbx-001-00000ae1”, “__REC_STATUS=RECORDING”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:23] Set(“SIP/ktel-pbx-001-00000ae1”, “CDR(recordingfile)=in-2487145547-2482368305-20210603-115118-1622735478.48929.wav”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:24] Return(“SIP/ktel-pbx-001-00000ae1”, “”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:5] Return(“SIP/ktel-pbx-001-00000ae1”, “”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:3] Set(“SIP/ktel-pbx-001-00000ae1”, “__FROM_DID=2487145547”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:4] Set(“SIP/ktel-pbx-001-00000ae1”, “CDR(did)=2487145547”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:5] ExecIf(“SIP/ktel-pbx-001-00000ae1”, “0 ?Set(CALLERID(name)=2482368305)”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:6] Set(“SIP/ktel-pbx-001-00000ae1”, “CHANNEL(musicclass)=default”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:7] Set(“SIP/ktel-pbx-001-00000ae1”, “__MOHCLASS=default”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:8] Ringing(“SIP/ktel-pbx-001-00000ae1”, “”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:9] Set(“SIP/ktel-pbx-001-00000ae1”, “__RINGINGSENT=TRUE”) in new stack
[2021-06-03 11:51:18] WARNING[1311][C-00000e8f] func_channel.c: Unknown or unavailable item requested: ‘reversecharge’
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:10] GotoIf(“SIP/ktel-pbx-001-00000ae1”, “0?macro-hangupcall”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:11] Set(“SIP/ktel-pbx-001-00000ae1”, “__CALLINGPRES_SV=allowed_not_screened”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:12] Set(“SIP/ktel-pbx-001-00000ae1”, “CALLERPRES()=allowed_not_screened”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:13] Goto(“SIP/ktel-pbx-001-00000ae1”, “timeconditions,1,1”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Goto (timeconditions,1,1)
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:1] Set(“SIP/ktel-pbx-001-00000ae1”, “DB(TC/1/INUSESTATE)=INUSE”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:2] Set(“SIP/ktel-pbx-001-00000ae1”, “DB(TC/1/NOT_INUSESTATE)=NOT_INUSE”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:3] GotoIfTime(“SIP/ktel-pbx-001-00000ae1”, “08:45-17:15,mon-sat,1-31,jan-dec?truestate”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Goto (timeconditions,1,12)
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:12] GotoIf(“SIP/ktel-pbx-001-00000ae1”, “0?falsegoto”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:13] ExecIf(“SIP/ktel-pbx-001-00000ae1”, “0?Set(DB(TC/1)=)”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:14] Set(“SIP/ktel-pbx-001-00000ae1”, “DEVICE_STATE(Custom:TC1)=NOT_INUSE”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:15] ExecIf(“SIP/ktel-pbx-001-00000ae1”, “0?Set(NOT_INUSE)”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:16] GotoIf(“SIP/ktel-pbx-001-00000ae1”, “1?ivr-3,s,1”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Goto (ivr-3,s,1)
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:1] Set(“SIP/ktel-pbx-001-00000ae1”, “_IVR_CONTEXT_ivr-3=”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:2] Set(“SIP/ktel-pbx-001-00000ae1”, “_IVR_CONTEXT=ivr-3”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:3] Set(“SIP/ktel-pbx-001-00000ae1”, “__IVR_RETVM=”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:4] GotoIf(“SIP/ktel-pbx-001-00000ae1”, “0?skip”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:5] Answer(“SIP/ktel-pbx-001-00000ae1”, “”) in new stack
[2021-06-03 11:51:18] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:6] Wait(“SIP/ktel-pbx-001-00000ae1”, “1”) in new stack
[2021-06-03 11:51:19] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:7] Set(“SIP/ktel-pbx-001-00000ae1”, “IVR_MSG=custom/msg1”) in new stack
[2021-06-03 11:51:19] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:8] Set(“SIP/ktel-pbx-001-00000ae1”, “TIMEOUT(digit)=3”) in new stack
[2021-06-03 11:51:19] VERBOSE[1311][C-00000e8f] func_timeout.c: Digit timeout set to 3.000
[2021-06-03 11:51:19] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:9] ExecIf(“SIP/ktel-pbx-001-00000ae1”, “1?Background(custom/msg1)”) in new stack
[2021-06-03 11:51:19] VERBOSE[1311][C-00000e8f] file.c: <SIP/ktel-pbx-001-00000ae1> Playing ‘custom/msg1.slin’ (language ‘en’)
[2021-06-03 11:51:40] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:10] WaitExten(“SIP/ktel-pbx-001-00000ae1”, “24,”) in new stack
[2021-06-03 11:51:55] VERBOSE[1311][C-00000e8f] pbx.c: Spawn extension (ivr-3, s, 10) exited non-zero on ‘SIP/ktel-pbx-001-00000ae1’
[2021-06-03 11:51:55] VERBOSE[1311][C-00000e8f] pbx.c: Executing [[email protected]:1] Hangup(“SIP/ktel-pbx-001-00000ae1”, “”) in new stack
[2021-06-03 11:51:55] VERBOSE[1311][C-00000e8f] pbx.c: Spawn extension (ivr-3, h, 1) exited non-zero on ‘SIP/ktel-pbx-001-00000ae1’
[2021-06-03 11:51:55] VERBOSE[1312][C-00000e8f] app_mixmonitor.c: MixMonitor close filestream (mixed)
[2021-06-03 11:51:55] VERBOSE[1312][C-00000e8f] app_mixmonitor.c: End MixMonitor Recording SIP/ktel-pbx-001-00000ae1

I’ve looked up errors for the following and didn’t find a solution.
On this server we get a large number of these…
[2021-06-03 11:58:26] VERBOSE[1381][C-00000e9a] bridge_channel.c: Channel SIP/ktel-pbx-001-00000aec joined ‘simple_bridge’ basic-bridge <8f2d2f05-cc4d-43eb-aeb7-40a09e4403f2>
[2021-06-03 11:58:26] VERBOSE[1393][C-00000e9a] bridge_channel.c: Channel SIP/4200-00000aed joined ‘simple_bridge’ basic-bridge <8f2d2f05-cc4d-43eb-aeb7-40a09e4403f2>
[2021-06-03 11:58:26] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:26] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:26] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:26] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:26] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:27] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:29] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:29] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:29] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:29] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:29] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:29] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:29] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:30] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:30] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:30] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:31] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:31] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:31] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:31] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:32] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:33] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:35] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:36] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:37] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:38] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:38] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:38] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:38] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:38] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:39] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:39] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:39] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:39] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:39] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:39] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:39] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:39] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:39] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:40] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:40] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:40] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:40] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:40] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:41] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:42] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:43] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write
[2021-06-03 11:58:44] WARNING[1381][C-00000e9a] chan_sip.c: Can’t send 10 type frames with SIP write

First of all, please use pastebin to post a call trace, or preformatted text.

Second, this is not a full call trace, we don’t see the call disconnecting here. Please post a full call trace. See how: https://wiki.freepbx.org/display/SUP/Providing+Great+Debug#ProvidingGreatDebug-AsteriskLogs-PartII

Third, your PBX version is EOL.

Finally, see here what these messages mean: https://community.asterisk.org/t/cant-send-10-type-frames-with-pjsip/72395/2?u=pitzkey

This is what you’re asking for?

The caller seems to have hung up rather than entering the requested option.

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