Pulled this from the logs if it helps:
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:17.862607 [DEBUG] switch_ivr_play_say.c:1942 done playing file /usr/share/freeswitch/sounds/en/us/callie/voicemail/vm-you_have.wav
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:17.862607 [NOTICE] sofia.c:1012 Hangup sofia/internal/
232@xxxx.xxxx.xxxx..co.uk [CS_EXECUTE] [NORMAL_CLEARING]
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:17.502598 [DEBUG] switch_ivr_play_say.c:1498 Codec Activated L16@8000hz 1 channels 20ms
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:17.502598 [DEBUG] switch_ivr_play_say.c:250 Handle play-file:[voicemail/vm-you_have.wav] (en:en)
2021-04-01 10:52:17.502598 [DEBUG] freeswitch_lua.cpp:382 DBH handle 0x7f41cc4b01d0 released.
2021-04-01 10:52:17.502598 [DEBUG] freeswitch_lua.cpp:365 DBH handle 0x7f41cc4b01d0 Connected.
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:17.482641 [DEBUG] switch_ivr_play_say.c:70 No language specified - Using [en]
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:17.062644 [DEBUG] switch_ivr_play_say.c:1942 done playing file /usr/share/freeswitch/sounds/en/us/callie/voicemail/vm-messages.wav
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:16.402639 [DEBUG] switch_ivr_play_say.c:1498 Codec Activated L16@8000hz 1 channels 20ms
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:16.402639 [DEBUG] switch_ivr_play_say.c:250 Handle play-file:[voicemail/vm-messages.wav] (en:en)
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:16.282622 [DEBUG] switch_ivr_play_say.c:1942 done playing file /usr/share/freeswitch/sounds/en/us/callie/voicemail/vm-new.wav
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:15.942645 [DEBUG] switch_ivr_play_say.c:1498 Codec Activated L16@8000hz 1 channels 20ms
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:15.942645 [DEBUG] switch_ivr_play_say.c:250 Handle play-file:[voicemail/vm-new.wav] (en:en)
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:15.822640 [DEBUG] switch_ivr_play_say.c:1942 done playing file file_string://digits/0.wav
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:15.042608 [DEBUG] switch_ivr_play_say.c:1498 Codec Activated L16@8000hz 1 channels 20ms
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:15.042608 [DEBUG] switch_ivr_play_say.c:250 Handle say:[0] (en:en)
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:14.942596 [DEBUG] switch_ivr_play_say.c:1942 done playing file /usr/share/freeswitch/sounds/en/us/callie/voicemail/vm-you_have.wav
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:14.402597 [DEBUG] switch_ivr_play_say.c:1498 Codec Activated L16@8000hz 1 channels 20ms
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:14.402597 [DEBUG] switch_ivr_play_say.c:250 Handle play-file:[voicemail/vm-you_have.wav] (en:en)
2021-04-01 10:52:14.402597 [DEBUG] freeswitch_lua.cpp:382 DBH handle 0x7f41cc4b01d0 released.
2021-04-01 10:52:14.402597 [DEBUG] freeswitch_lua.cpp:365 DBH handle 0x7f41cc4b01d0 Connected.
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:14.382597 [DEBUG] switch_ivr_play_say.c:70 No language specified - Using [en]
960875e6-e1e5-4ee8-9eea-c52d42ac084b EXECUTE sofia/internal/
232@xxxx.xxxx.xxxx..co.uk sleep(1000)
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:13.382596 [INFO] switch_channel.c:515 RECV DTMF #:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:13.382596 [DEBUG] switch_rtp.c:7534 RTP RECV DTMF #:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:11.522613 [INFO] switch_channel.c:515 RECV DTMF 2:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:11.522613 [DEBUG] switch_rtp.c:7534 RTP RECV DTMF 2:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:11.242613 [INFO] switch_channel.c:515 RECV DTMF 2:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:11.242613 [DEBUG] switch_rtp.c:7534 RTP RECV DTMF 2:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:10.722614 [INFO] switch_channel.c:515 RECV DTMF 3:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:10.722614 [DEBUG] switch_rtp.c:7534 RTP RECV DTMF 3:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:10.262612 [DEBUG] switch_ivr_play_say.c:1942 done playing file /usr/share/freeswitch/sounds/en/us/callie/voicemail/vm-enter_pass.wav
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:10.262612 [INFO] switch_channel.c:515 RECV DTMF 2:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:10.262612 [DEBUG] switch_rtp.c:7534 RTP RECV DTMF 2:1600
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:08.602595 [DEBUG] switch_ivr_play_say.c:1498 Codec Activated L16@8000hz 1 channels 20ms
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:08.602595 [DEBUG] switch_ivr_play_say.c:250 Handle play-file:[voicemail/vm-enter_pass.wav] (en:en)
2021-04-01 10:52:08.602595 [DEBUG] freeswitch_lua.cpp:382 DBH handle 0x7f41cc4b01d0 released.
2021-04-01 10:52:08.602595 [DEBUG] freeswitch_lua.cpp:365 DBH handle 0x7f41cc4b01d0 Connected.
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:08.582603 [DEBUG] switch_ivr_play_say.c:70 No language specified - Using [en]
960875e6-e1e5-4ee8-9eea-c52d42ac084b 2021-04-01 10:52:08.482602 [DEBUG] switch_ivr_play_say.c:1942 done playing file /usr/share/freeswitch/sounds/en/us/callie/voicemail/vm-fail_auth.wav
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.422598 [INFO] switch_rtp.c:7268 Auto Changing audio port from xxx.xxx.xxx.xxx:16464 to xxx.xxx.xxx.xxx:10661
414b807c-6dfc-4da5-8352-ee9691591a8a 2021-04-01 10:52:07.362596 [DEBUG] switch_rtp.c:7308 Correct audio ip/port confirmed.
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.342599 [DEBUG] switch_core_media.c:6861 Audio params are unchanged for sofia/internal/
270@xxx.xxx.xxx.xxx:5073.
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.342599 [DEBUG] sofia.c:8061 Processing updated SDP
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.342599 [DEBUG] switch_core_media.c:4767 sofia/internal/
270@xxx.xxx.xxx.xxx:5073 Set 2833 dtmf send payload to 101 recv payload to 101
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.342599 [DEBUG] switch_core_media.c:4708 Set telephone-event payload to 101@8000
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.342599 [DEBUG] switch_core_media.c:4365 Set telephone-event payload to 101@8000
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.342599 [DEBUG] switch_core_media.c:4449 Audio Codec Compare [PCMU:0:8000:20:64000:1]/[PCMA:8:8000:20:64000:1]
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.342599 [DEBUG] switch_core_media.c:4504 Audio Codec Compare [PCMU:0:8000:20:64000:1] ++++ is saved as a match
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.342599 [DEBUG] switch_core_media.c:4449 Audio Codec Compare [PCMU:0:8000:20:64000:1]/[PCMU:0:8000:20:64000:1]
9b718860-8d0b-4ff3-8b8b-1b00cf0c223c 2021-04-01 10:52:07.342599 [DEBUG] switch_core_media.c:4449 Audio Codec Compare [PCMU:0:8000:20:64000:1]/[G722:9:8000:20:64000:1]