I can confirm that it works on Asterisk 16.17
-- Executing [s@trunk:14] Dial("PJSIP/126-0000003f", "IAX2/biolabvc2/0116082663,300,TU(connected,PJSIP/126,1631864090,1631864090.535)") in new stack
-- Called IAX2/biolabvc2/0116082663
Tx-Frame Retry[000] – OSeqno: 000 ISeqno: 000 Type: IAX Subclass: NEW
Timestamp: 00019ms SCall: 32102 DCall: 00000 169.255.228.100:4569
VERSION : 2
CALLED NUMBER : 0116082663
CODEC_PREFS : (g729)
CALLING NUMBER : 27114571826
CALLING PRESNTN : 0
CALLING TYPEOFN : 0
CALLING TRANSIT : 0
CALLING NAME : Merck Biolab
LANGUAGE : en
USERNAME : biolabvc2
FORMAT : 256
FORMAT2 : g729
CAPABILITY : 256
CAPABILITY2 : g729
ADSICPE : 2
DATE TIME : 2021-09-17 09:34:50
Rx-Frame Retry[ No] – OSeqno: 000 ISeqno: 001 Type: IAX Subclass: CTOKEN
Timestamp: 00019ms SCall: 00001 DCall: 32102 169.255.228.100:4569
CALLTOKEN : 51 bytes
Tx-Frame Retry[000] – OSeqno: 000 ISeqno: 000 Type: IAX Subclass: NEW
Timestamp: 00042ms SCall: 32102 DCall: 00000 169.255.228.100:4569
VERSION : 2
CALLED NUMBER : 0116082663
CODEC_PREFS : (g729)
CALLING NUMBER : 27114571826
CALLING PRESNTN : 0
CALLING TYPEOFN : 0
CALLING TRANSIT : 0
CALLING NAME : Merck Biolab
LANGUAGE : en
USERNAME : biolabvc2
FORMAT : 256
FORMAT2 : g729
CAPABILITY : 256
CAPABILITY2 : g729
ADSICPE : 2
DATE TIME : 2021-09-17 09:34:50
CALLTOKEN : 51 bytes
Rx-Frame Retry[ No] – OSeqno: 000 ISeqno: 001 Type: IAX Subclass: ACK
Timestamp: 00042ms SCall: 03532 DCall: 32102 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 000 ISeqno: 001 Type: IAX Subclass: AUTHREQ
Timestamp: 00004ms SCall: 03532 DCall: 32102 169.255.228.100:4569
AUTHMETHODS : 2
CHALLENGE : \x36\x38\x38\x37\x36\x31\x35\x34\x30
USERNAME : biolabvc2
Tx-Frame Retry[000] – OSeqno: 001 ISeqno: 001 Type: IAX Subclass: AUTHREP
Timestamp: 00043ms SCall: 32102 DCall: 03532 169.255.228.100:4569
MD5 RESULT : 02171eb0fbb24a03efb9804ed28c6e4b
Rx-Frame Retry[ No] – OSeqno: 001 ISeqno: 002 Type: IAX Subclass: ACK
Timestamp: 00043ms SCall: 03532 DCall: 32102 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 001 ISeqno: 002 Type: IAX Subclass: ACCEPT
Timestamp: 00005ms SCall: 03532 DCall: 32102 169.255.228.100:4569
FORMAT : 256
FORMAT2 : g729
-- Call accepted by 169.255.228.100:4569 (format g729)
-- Format for call is (g729)
Tx-Frame Retry[-01] – OSeqno: 002 ISeqno: 002 Type: IAX Subclass: ACK
Timestamp: 00005ms SCall: 32102 DCall: 03532 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 002 ISeqno: 002 Type: CONTROL Subclass: ANSWER
Timestamp: 01584ms SCall: 03532 DCall: 32102 169.255.228.100:4569
Tx-Frame Retry[-01] – OSeqno: 002 ISeqno: 003 Type: IAX Subclass: ACK
Timestamp: 01584ms SCall: 32102 DCall: 03532 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 003 ISeqno: 002 Type: CONTROL Subclass: (255?)
Timestamp: 01587ms SCall: 03532 DCall: 32102 169.255.228.100:4569
Tx-Frame Retry[-01] – OSeqno: 002 ISeqno: 004 Type: IAX Subclass: ACK
Timestamp: 01587ms SCall: 32102 DCall: 03532 169.255.228.100:4569
– IAX2/biolabvc2-32102 answered PJSIP/126-0000003f
– IAX2/biolabvc2-32102 Internal Gosub(connected,s,1(PJSIP/126,1631864090,1631864090.535)) start
– Executing [s@connected:1] Set(“IAX2/biolabvc2-32102”, “AGENT=PJSIP/126”) in new stack
– Executing [s@connected:2] Set(“IAX2/biolabvc2-32102”, “HOLDTIME=2”) in new stack
– Executing [s@connected:3] System(“IAX2/biolabvc2-32102”, “echo “1631864092|1631864090.535|outbound|PJSIP/126|CONNECT|2|1631864090.535|2” >> /var/log/asterisk/queue_log”) in new stack
– Executing [s@connected:4] Return(“IAX2/biolabvc2-32102”, “”) in new stack
== Spawn extension (external, , 1) exited non-zero on ‘IAX2/biolabvc2-32102’
– IAX2/biolabvc2-32102 Internal Gosub(connected,s,1(PJSIP/126,1631864090,1631864090.535)) complete GOSUB_RETVAL=
– Channel IAX2/biolabvc2-32102 joined ‘simple_bridge’ basic-bridge
– Channel PJSIP/126-0000003f joined ‘simple_bridge’ basic-bridge
Tx-Frame Retry[000] – OSeqno: 002 ISeqno: 004 Type: VOICE Subclass: 136
Timestamp: 01839ms SCall: 32102 DCall: 03532 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 004 ISeqno: 003 Type: IAX Subclass: ACK
Timestamp: 01839ms SCall: 03532 DCall: 32102 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 004 ISeqno: 003 Type: VOICE Subclass: 136
Timestamp: 02127ms SCall: 03532 DCall: 32102 169.255.228.100:4569
Tx-Frame Retry[-01] – OSeqno: 003 ISeqno: 005 Type: IAX Subclass: ACK
Timestamp: 02127ms SCall: 32102 DCall: 03532 169.255.228.100:4569
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
[Sep 17 09:34:56] WARNING[58687]: chan_iax2.c:1229 jb_warning_output: Resyncing the jb. last_delay 11, this delay -20716, threshold 1082, new offset 20716
– – G.729 PLC
– – G.729 PLC
Tx-Frame Retry[000] – OSeqno: 003 ISeqno: 005 Type: IAX Subclass: LAGRQ
Timestamp: 10022ms SCall: 32102 DCall: 03532 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 005 ISeqno: 003 Type: IAX Subclass: LAGRQ
Timestamp: 213153826ms SCall: 03532 DCall: 32102 169.255.228.100:4569
Tx-Frame Retry[000] – OSeqno: 004 ISeqno: 006 Type: IAX Subclass: LAGRP
Timestamp: 213153826ms SCall: 32102 DCall: 03532 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 006 ISeqno: 004 Type: IAX Subclass: LAGRP
Timestamp: 10022ms SCall: 03532 DCall: 32102 169.255.228.100:4569
Tx-Frame Retry[-01] – OSeqno: 004 ISeqno: 007 Type: IAX Subclass: ACK
Timestamp: 10022ms SCall: 32102 DCall: 03532 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 006 ISeqno: 005 Type: IAX Subclass: ACK
Timestamp: 213153826ms SCall: 03532 DCall: 32102 169.255.228.100:4569
[Sep 17 09:35:00] WARNING[58686]: chan_iax2.c:1229 jb_warning_output: Resyncing the jb. last_delay -57, this delay -213123126, threshold 1084, new offset 213143842
– – G.729 PLC
– – G.729 PLC
– – G.729 PLC
Tx-Frame Retry[000] – OSeqno: 000 ISeqno: 000 Type: IAX Subclass: POKE
Timestamp: 00001ms SCall: 14366 DCall: 00000 169.255.228.100:4569
Rx-Frame Retry[ No] – OSeqno: 000 ISeqno: 001 Type: IAX Subclass: PONG
Timestamp: 00001ms SCall: 00001 DCall: 14366 169.255.228.100:4569
Tx-Frame Retry[-01] – OSeqno: 001 ISeqno: 001 Type: IAX Subclass: ACK
Timestamp: 00001ms SCall: 14366 DCall: 00001 169.255.228.100:4569