Twilio call timing out #174

Wurstcake · 2024-09-20T21:59:20Z

Wurstcake
Sep 20, 2024

Hi and thank you very much for this project.

I have been trying to get LibreSBC to work with Twilio and FreePBX but for some reason I can't quite figure out what's wrong. I tried configuring the following route:
Twilio -> LibreSBC -> FreePBX
but am getting a timeout when Twilio tries to call LibreSBC. I am running LibreSBC and FreePBX in an Azure virtual network. The firewall is letting the connection through but LibreSBC seems to not respond at all. I couldn't find any call detail records either (are they only generated when the call actually succeeds?). On LibreSBC side I can't find any logs of what happenned. Any help is much appreciated. My setup in LibreSBC is the following:

Media classes

{
    "name": "twilio_media",
    "desc": "description",
    "codecs": [
        "PCMA",
        "PCMU"
    ],
    "codec_negotiation": "generous",
    "media_mode": "transcode",
    "dtmf_mode": "rfc2833",
    "cng": false,
    "vad": false
}

{
    "name": "freepbx_media",
    "desc": "",
    "codecs": [
        "G729",
        "PCMA",
        "PCMU"
    ],
    "codec_negotiation": "generous",
    "media_mode": "transcode",
    "dtmf_mode": "rfc2833",
    "cng": false,
    "vad": false
}

NetAlias records

{
    "desc": "Network alias for Twilio external signaling and RTP",
    "name": "public",
    "addresses": [
        {
            "member": "vm-sbc-dev-sec",
            "listen": "<LibreSBC VM Public IP>",
            "advertise": "<LibreSBC VM Public IP>"
        }
    ]
}

{
    "desc": "Network alias for FreePBX internal signaling and RTP",
    "name": "private",
    "addresses": [
        {
            "member": "vm-sbc-dev-sec",
            "listen": "<LibreSBC VM Private IP>",
            "advertise": "<LibreSBC VM Private IP>"
        }
    ]
}

External SIP Profile

{
    "name": "external",
    "desc": "SIP Public Profile",
    "user_agent": "SBC",
    "sdp_user": "SBC",
    "local_network_acl": "rfc1918.auto",
    "addrdetect": "autonat",
    "enable_100rel": true,
    "ignore_183nosdp": true,
    "sip_options_respond_503_on_busy": false,
    "disable_transfer": true,
    "manual_redirect": true,
    "enable_3pcc": false,
    "enable_compact_headers": false,
    "dtmf_type": "rfc2833",
    "media_timeout": 0,
    "rtp_rewrite_timestamps": true,
    "context": "carrier",
    "sip_port": 5060,
    "sip_address": "public",
    "rtp_address": "public",
    "tls": false,
    "tls_only": false,
    "sips_port": 5061,
    "tls_version": "tlsv1.2",
    "realm": "external.libresbc"
}

Internal SIP Profile

{
    "name": "internal",
    "desc": "SIP Private Profile",
    "user_agent": "LibreSBC",
    "sdp_user": "LibreSBC",
    "local_network_acl": "rfc1918.auto",
    "addrdetect": "autonat",
    "enable_100rel": true,
    "ignore_183nosdp": true,
    "sip_options_respond_503_on_busy": false,
    "disable_transfer": true,
    "manual_redirect": true,
    "enable_3pcc": false,
    "enable_compact_headers": false,
    "dtmf_type": "rfc2833",
    "media_timeout": 0,
    "rtp_rewrite_timestamps": true,
    "context": "carrier",
    "sip_port": 5060,
    "sip_address": "private",
    "rtp_address": "private",
    "tls": false,
    "tls_only": false,
    "sips_port": 5061,
    "tls_version": "tlsv1.2",
    "realm": "internal.libresbc"
}

Inbound Interconnect for Twilio

{
    "capacity_class": "whispy_capacity",
    "manipulation_classes": [],
    "sipaddrs": [
        "54.169.127.128/30",
        "35.156.191.128/30",
        "54.252.254.64/30",
        "54.244.51.0/30",
        "54.172.60.0/30",
        "54.65.63.192/30",
        "177.71.206.192/30",
        "54.171.127.192/30"
    ],
    "enable": true,
    "media_class": "twilio_media",
    "name": "twilio_to_sbc",
    "nodes": [
        "_ALL_"
    ],
    "ringready": false,
    "authscheme": "IP",
    "rtpaddrs": [
        "3.122.181.0/24",
        "3.112.80.0/24",
        "52.215.127.0/24",
        "54.169.127.128/26",
        "177.71.206.192/26",
        "18.228.249.0/24",
        "54.171.127.192/26",
        "3.1.77.0/24",
        "35.156.191.128/25",
        "54.65.63.192/26",
        "3.104.90.0/24",
        "54.244.51.0/24",
        "34.203.250.0/23",
        "54.252.254.64/26",
        "54.172.60.0/23"
    ],
    "routing": "route_to_freepbx",
    "translation_classes": [],
    "sipprofile": "external",
    "desc": "Twilio"
}

Route to FreePBX

{
    "name": "route_to_freepbx",
    "desc": "",
    "action": "route",
    "routes": {
        "primary": "sbc_to_freepbx",
        "secondary": "sbc_to_freepbx",
        "load": 100
    },
    "records": []
}

SIP Gateway for FreePBX

{
    "name": "freepbx_gateway",
    "desc": "",
    "username": "none",
    "password": "none",
    "proxy": "<FreePBX VM Private IP>",
    "port": 5060,
    "transport": "udp",
    "do_register": false,
    "caller_id_in_from": true,
    "cid_type": "none",
    "ping": 600,
}

Outbound Interconnect for FreePBX

{
    "name": "sbc_to_freepbx",
    "desc": "",
    "sipprofile": "internal",
    "distribution": "weight_based",
    "sipaddrs": [],
    "rtpaddrs": [
        "<FreePBX VM Private IP>/32"
    ],
    "media_class": "freepbx_media",
    "capacity_class": "whispy_capacity",
    "translation_classes": [],
    "manipulation_classes": [],
    "privacy": [
        "none"
    ],
    "cid_type": "none",
    "nofailover_sip_codes": [],
    "nodes": [
        "_ALL_"
    ],
    "enable": true,
    "gateways": [
        {
            "name": "freepbx_gateway",
            "weight": 1
        }
    ]
}

Answered by hnimminh

Oct 8, 2024

I believe I found what wrong here, your server has only 1 interface (eth0) and IP is 10.0.3.4.

external sip profile was configured wrongly. In general a service cannot listen on IP address that does not engaged.

correct way for your case is:
internal listen on port 5080 & use NetAlias private
external listen on port 5060 & use new NetAlias, example natnet

{
    "desc": "Network alias for Twilio external signaling and RTP",
    "name": "netnat",
    "addresses": [
        {
            "member": "vm-sbc-dev-sec",
            "listen": "<LibreSBC VM Private IP>",
            "advertise": "<LibreSBC VM Public IP>"
        }
    ]
}

View full answer

hnimminh · 2024-09-23T19:34:24Z

hnimminh
Sep 23, 2024
Maintainer

@Wurstcake
By common sense, there are 3 possible issues

network/security group of Azure, make sure your server reachable from outside
firewall of libresbc, make sure twillio IP show here nft list ruleset
SIP service was not served in port 5060, you can check by netstat -nltup

0 replies

Wurstcake · 2024-09-28T22:29:08Z

Wurstcake
Sep 28, 2024
Author

Hi @hnimminh
Thanks for the quick reply.

The network settings in azure are set to allow the traffic through
Also the firewall of libresbc lists the twilio ip addresses
It does seem that the SIP service isn't served on the port 5060. I ran netstat -nltup and got:

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 127.0.0.1:6379          0.0.0.0:*               LISTEN      576/redis-server 12
tcp        0      0 127.0.0.1:8080          0.0.0.0:*               LISTEN      572/python3
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      601/sshd: /usr/sbin
tcp        0      0 0.0.0.0:8443            0.0.0.0:*               LISTEN      586/nginx: master p
tcp6       0      0 ::1:6379                :::*                    LISTEN      576/redis-server 12
tcp6       0      0 :::4369                 :::*                    LISTEN      1/init
tcp6       0      0 :::22                   :::*                    LISTEN      601/sshd: /usr/sbin
udp        0      0 0.0.0.0:68              0.0.0.0:*                           385/dhclient
udp        0      0 127.0.0.1:323           0.0.0.0:*                           575/chronyd
udp6       0      0 ::1:323                 :::*                                575/chronyd
udp6       0      0 fe80::7e1e:52ff:fe3:546 :::*                                476/dhclient

Where should I configure the SIP service to start on the SBC VM startup?

2 replies

hnimminh Sep 30, 2024
Maintainer

It seem like some service was not start, You can try to restart liberator service, and check again if service up:
systemctl status liberator

and also you please provide the log below:
/var/log/libresbc/liberator.log
/var/log/libresbc/callng.log

you can send email if you don't want to public your log

Wurstcake Oct 7, 2024
Author

I restarted the entire VM and checked the status of the liberator service. This is the result:

liberator.service - Liberator - Libre Master Daemon
     Loaded: loaded (/opt/libresbc/v0.7.2/liberator/system/systemd/liberator.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2024-10-07 18:21:12 UTC; 1min 49s ago
   Main PID: 570 (python3)
      Tasks: 16 (limit: 2219)
     Memory: 238.2M
        CPU: 6.315s
     CGroup: /system.slice/liberator.service
             ├─570 /usr/bin/python3 /opt/libresbc/v0.7.2/liberator/main.py
             ├─608 /usr/bin/python3 -c from multiprocessing.resource_tracker import main;main(7)
             ├─609 /usr/bin/python3 -c from multiprocessing.spawn import spawn_main; spawn_main(tracker_fd=12, pipe_handle=14) --multiprocessing-fork
             ├─610 /usr/bin/python3 -c from multiprocessing.spawn import spawn_main; spawn_main(tracker_fd=12, pipe_handle=16) --multiprocessing-fork
             ├─614 /usr/bin/python3 -c from multiprocessing.spawn import spawn_main; spawn_main(tracker_fd=12, pipe_handle=21) --multiprocessing-fork
             └─615 /usr/bin/python3 -c from multiprocessing.spawn import spawn_main; spawn_main(tracker_fd=12, pipe_handle=23) --multiprocessing-fork

Oct 07 18:21:21 vm-sbc-dev-sec python3[614]: progname[614]:module=liberator, space=httpapi, action=middleware, processtime=0.005, requestid=fe07b4c2-eff9-4e3d-88e1-2a8f775e1679, clientip=127.0.0.1, request=get:/cfgapi/fsxml/directory, status_code=200
Oct 07 18:21:38 vm-sbc-dev-sec libresbc[619]: module=callng, space=event:initiation, action=clean_node_capacity, node=vm-sbc-dev-sec
Oct 07 18:21:38 vm-sbc-dev-sec libresbc[619]: module=callng, space=event:initiation, action=environment, CLUSTERNAME=defaults, CLUSTERMEMBERS=vm-sbc-dev-sec
Oct 07 18:21:39 vm-sbc-dev-sec libresbc[619]: module=callng, space=event:startup, action=depgsql, ack=+OK
Oct 07 18:21:45 vm-sbc-dev-sec python3[614]: progname[614]:module=liberator, space=httpapi, action=middleware, processtime=0.001, requestid=2eee2004-4a29-4fe6-9435-38384038f7bf, clientip=172.16.254.1, request=get:/libreapi/cluster, status_code=200, response_body={"name":"defaults","members":["vm-sbc-dev-sec"],"rtp_start_port":10000,"rtp_end_port":60000,"m>
Oct 07 18:21:45 vm-sbc-dev-sec python3[614]: progname[614]:module=liberator, space=httpapi, action=middleware, processtime=0.001, requestid=314c6e90-b351-4d1f-b94e-14d090d711da, clientip=172.16.254.1, request=get:/libreapi/predefine, status_code=200, response_body={"application":"LIBRESBC","swversion":"v0.7.2","description":"Open Source Session Border Con>
Oct 07 18:21:48 vm-sbc-dev-sec python3[615]: progname[615]:module=liberator, space=httpapi, action=middleware, processtime=0.002, requestid=7ac77d41-c3dd-49f2-a862-370c8580303a, clientip=172.16.254.1, request=get:/libreapi/routing/table, status_code=200, response_body=[{"name":"route_to_twilio","desc":"","action":"route","routes":["sbc_to_twilio","sbc_to_>
Oct 07 18:21:51 vm-sbc-dev-sec python3[610]: progname[610]:module=liberator, space=httpapi, action=middleware, processtime=0.002, requestid=258e20cb-00ed-45f3-a163-154747b8b430, clientip=172.16.254.1, request=get:/libreapi/sipprofile, status_code=200, response_body=[{"name":"internal","desc":"SIP Private Profile"},{"name":"external","desc":"SIP Public Pro>
Oct 07 18:21:53 vm-sbc-dev-sec python3[610]: progname[610]:module=liberator, space=httpapi, action=middleware, processtime=0.002, requestid=4c577ebf-49b8-416a-ad02-492180e04bce, clientip=172.16.254.1, request=get:/libreapi/class/media, status_code=200, response_body=[{"name":"twilio_media","desc":"description"},{"name":"freepbx_media","desc":""}]
Oct 07 18:22:49 vm-sbc-dev-sec python3[570]: progname[570]:module=liberator, space=basemgr, action=fssocket, connected=False, requestid=1c5e199c-e72e-4429-86e6-ebfc740457b4, commands=['global_setvar external:advertising=<LibreSBC VM Public IP>', 'global_setvar internal:advertising=<LibreSBC VM Private IP>'], result=False

callng.log:

2024-10-07T18:21:38.257825+00:00 vm-sbc-dev-sec libresbc 619 INFO  module=callng, space=event:initiation, action=clean_node_capacity, node=vm-sbc-dev-sec
2024-10-07T18:21:38.258768+00:00 vm-sbc-dev-sec libresbc 619 INFO  module=callng, space=event:initiation, action=environment, CLUSTERNAME=defaults, CLUSTERMEMBERS=vm-sbc-dev-sec
2024-10-07T18:21:39.789240+00:00 vm-sbc-dev-sec libresbc 619 INFO  module=callng, space=event:startup, action=depgsql, ack=+OK#012

liberator.log:

2024-10-07T18:21:13.629358+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, node=vm-sbc-dev-sec, action=basestartup, state=initiating
2024-10-07T18:21:13.631095+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, thread=BaseEventHandler, node=vm-sbc-dev-sec, action=start
2024-10-07T18:21:13.632134+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, action=rdbinstance, message=[skip action since buitin redis is disabled]
2024-10-07T18:21:13.632643+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, action=report, message={'type': 'subscribe', 'pattern': None, 'channel': 'CHANGE_CFG_CHANNEL', 'data': 1}
2024-10-07T18:21:13.632883+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, action=report, message={'type': 'subscribe', 'pattern': None, 'channel': 'VM-SBC-DEV-SEC_CHANNEL', 'data': 2}
2024-10-07T18:21:13.639931+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, thread=SecurityEventHandler, node=vm-sbc-dev-sec, action=start
2024-10-07T18:21:13.640636+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=cdr, action=start_cdr_thread
2024-10-07T18:21:13.650795+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, node=vm-sbc-dev-sec, action=basestartup, state=completed
2024-10-07T18:21:14.063950+00:00 vm-sbc-dev-sec libresbc 570 ERR  space=basemgr, action=fsinstance.fsrun, error=618 Backgrounding.
2024-10-07T18:21:14.575177+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, action=nftupdate, requestid=00000000-0000-0000-0000-000000000000, result=success
2024-10-07T18:21:18.470735+00:00 vm-sbc-dev-sec libresbc 614 INFO  space=httpapi, action=middleware, processtime=0.007, requestid=7e6e8967-cddc-4f6b-9608-ee0642b6d2f1, clientip=127.0.0.1, request=get:/cfgapi/fsxml/acl, status_code=200
2024-10-07T18:21:19.137887+00:00 vm-sbc-dev-sec libresbc 614 INFO  space=httpapi, action=middleware, processtime=0.004, requestid=f3c400f1-d628-48e5-83d7-f61b7219f143, clientip=127.0.0.1, request=get:/cfgapi/fsxml/distributor, status_code=200
2024-10-07T18:21:19.818302+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, action=report, message={'type': 'message', 'pattern': None, 'channel': 'VM-SBC-DEV-SEC_CHANNEL', 'data': '{"portion": "cfgapi:sip", "delay": 30, "fsgvars": ["external:advertising=<LibreSBC VM Public IP>", "internal:advertising=<LibreSBC VM Private IP>"], "requestid": "1c5e199c-e72e-4429-86e6-ebfc740457b4"}'}
2024-10-07T18:21:19.854696+00:00 vm-sbc-dev-sec libresbc 614 INFO  space=httpapi, action=middleware, processtime=0.039, requestid=1c5e199c-e72e-4429-86e6-ebfc740457b4, clientip=127.0.0.1, request=get:/cfgapi/fsxml/sip-setting/vm-sbc-dev-sec, status_code=200
2024-10-07T18:21:20.504292+00:00 vm-sbc-dev-sec libresbc 614 INFO  space=httpapi, action=middleware, processtime=0.004, requestid=d3fda404-ecae-4c7f-ab54-ae6b61e9183b, clientip=127.0.0.1, request=get:/cfgapi/fsxml/switch, status_code=200
2024-10-07T18:21:21.155458+00:00 vm-sbc-dev-sec libresbc 614 INFO  space=httpapi, action=middleware, processtime=0.005, requestid=fe07b4c2-eff9-4e3d-88e1-2a8f775e1679, clientip=127.0.0.1, request=get:/cfgapi/fsxml/directory, status_code=200
2024-10-07T18:21:45.443445+00:00 vm-sbc-dev-sec libresbc 614 INFO  space=httpapi, action=middleware, processtime=0.001, requestid=2eee2004-4a29-4fe6-9435-38384038f7bf, clientip=172.16.254.1, request=get:/libreapi/cluster, status_code=200, response_body={"name":"defaults","members":["vm-sbc-dev-sec"],"rtp_start_port":10000,"rtp_end_port":60000,"max_calls_per_second":10,"max_concurrent_calls":100}
2024-10-07T18:21:45.445355+00:00 vm-sbc-dev-sec libresbc 614 INFO  space=httpapi, action=middleware, processtime=0.001, requestid=314c6e90-b351-4d1f-b94e-14d090d711da, clientip=172.16.254.1, request=get:/libreapi/predefine, status_code=200, response_body={"application":"LIBRESBC","swversion":"v0.7.2","description":"Open Source Session Border Controller for Large-Scale Voice Infrastructures","nodeid":"vm-sbc-dev-sec","candidates":["vm-sbc-dev-sec"],"codecs":["PCMA","PCMU","OPUS","G729","AMR","AMR-WB","GSM"]}
2024-10-07T18:21:48.688167+00:00 vm-sbc-dev-sec libresbc 615 INFO  space=httpapi, action=middleware, processtime=0.002, requestid=7ac77d41-c3dd-49f2-a862-370c8580303a, clientip=172.16.254.1, request=get:/libreapi/routing/table, status_code=200, response_body=[{"name":"route_to_twilio","desc":"","action":"route","routes":["sbc_to_twilio","sbc_to_twilio","100"]},{"name":"route_to_freepbx","desc":"","action":"route","routes":["sbc_to_freepbx","sbc_to_freepbx","100"]}]
2024-10-07T18:21:51.540373+00:00 vm-sbc-dev-sec libresbc 610 INFO  space=httpapi, action=middleware, processtime=0.002, requestid=258e20cb-00ed-45f3-a163-154747b8b430, clientip=172.16.254.1, request=get:/libreapi/sipprofile, status_code=200, response_body=[{"name":"internal","desc":"SIP Private Profile"},{"name":"external","desc":"SIP Public Profile"}]
2024-10-07T18:21:53.977408+00:00 vm-sbc-dev-sec libresbc 610 INFO  space=httpapi, action=middleware, processtime=0.002, requestid=4c577ebf-49b8-416a-ad02-492180e04bce, clientip=172.16.254.1, request=get:/libreapi/class/media, status_code=200, response_body=[{"name":"twilio_media","desc":"description"},{"name":"freepbx_media","desc":""}]
2024-10-07T18:22:49.889488+00:00 vm-sbc-dev-sec libresbc 570 INFO  space=basemgr, action=fssocket, connected=False, requestid=1c5e199c-e72e-4429-86e6-ebfc740457b4, commands=['global_setvar external:advertising=<LibreSBC VM Public IP>', 'global_setvar internal:advertising=<LibreSBC VM Private IP>'], result=False

Thanks for your help and let me know if you need any more information.

hnimminh · 2024-10-07T19:33:04Z

hnimminh
Oct 7, 2024
Maintainer

@Wurstcake Seems something wrong on configuration for sip profile, likely server listen on the non-existing IP address.
can you show ifconfig or ip addr (you can hide your address if needed)

0 replies

Wurstcake · 2024-10-07T21:50:29Z

Wurstcake
Oct 7, 2024
Author

@hnimminh These are the results.
ifconfig:

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.3.4  netmask 255.255.255.0  broadcast 10.0.3.255
        inet6 fe80::7e1e:52ff:fe3f:4405  prefixlen 64  scopeid 0x20<link>
        ether 7c:1e:52:3f:44:05  txqueuelen 1000  (Ethernet)
        RX packets 220228  bytes 159162609 (151.7 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 168492  bytes 58369556 (55.6 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 8443  bytes 584765 (571.0 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 8443  bytes 584765 (571.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ip addr

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 7c:1e:52:3f:44:05 brd ff:ff:ff:ff:ff:ff
    inet 10.0.3.4/24 brd 10.0.3.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::7e1e:52ff:fe3f:4405/64 scope link
       valid_lft forever preferred_lft forever

3 replies

hnimminh Oct 8, 2024
Maintainer

I believe I found what wrong here, your server has only 1 interface (eth0) and IP is 10.0.3.4.

external sip profile was configured wrongly. In general a service cannot listen on IP address that does not engaged.

correct way for your case is:
internal listen on port 5080 & use NetAlias private
external listen on port 5060 & use new NetAlias, example natnet

{
    "desc": "Network alias for Twilio external signaling and RTP",
    "name": "netnat",
    "addresses": [
        {
            "member": "vm-sbc-dev-sec",
            "listen": "<LibreSBC VM Private IP>",
            "advertise": "<LibreSBC VM Public IP>"
        }
    ]
}

Answer selected by Wurstcake

Wurstcake Nov 25, 2024
Author

Hi @hnimminh
Thanks a lot. This worked. However, I am a little confused, why we have to use the 5080 port on the internal side

hnimminh Nov 26, 2024
Maintainer

Cause, you have only interface.

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Twilio call timing out #174

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