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Sorry to hear you’re facing problems 
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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 20.0.5): 27.0.0
Operating system and version (eg, Ubuntu 20.04): 22.04
Apache or nginx version (eg, Apache 2.4.25): Nginx 1.24.0
PHP version (eg, 7.4): 8.2.7
The issue you are facing:
Talk allows one call i have to close browser / app on phone and try and call
Is this the first time you’ve seen this error? (N):
Steps to replicate it:
- Make call and hang up
- make another call
- both callers remain on waiting for each other screen (andriod has beeps)
The output of your Nextcloud log in Admin > Logging: - nothing logged in error nextcloud side
PASTE HERE
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!): N/A
PASTE HERE
The output of your Apache/nginx/system log in /var/log/____: no errors logged here
PASTE HERE
PASTE HERE
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
tdjJEX0RERHY3R0NpN19tVWg5OXNEaDRLaWtHclU5MUtIZTBPXzJZX1JrMXFESk1XNDdLbzZhajJjSk54UXc3WEcwNXBwcTE5MGZIdnZJa09rfDE1MDU0ODg4NjE= has RTT of 358 ms (358.160891ms)
Jul 08 22:10:30 ubuntu signaling[1150]: client.go:284: Client from 92.27.138.96 has RTT of 186 ms (186.364725ms)
Jul 08 22:10:31 ubuntu signaling[1150]: client.go:282: Client zEt7rgmMVJMCG4shjCDZVTt1tXxTMcXg-zV0iNn8JuN8PTBmTnBpVWgtbkdtandjM2tMc2V5b3M0dnF3ZUpnMzk4U1IxdDBRRUtKUVpNVngtS2w2T3lFNVg5d2luZmZMUXRvcGhYckJDaE5EYWRHaTRibVRqLVEtdjJEX0RERHY3R0NpN19tVWg5OXNEaDRLaWtHclU5MUtIZTBPXzJZX1JrMXFESk1XNDdLbzZhajJjSk54UXc3WEcwNXBwcTE5MGZIdnZJa09rfDE1MDU0ODg4NjE= has RTT of 140 ms (140.892967ms)
Jul 08 22:10:31 ubuntu signaling[1150]: client.go:284: Client from 92.27.138.96 has RTT of 225 ms (225.365777ms)
Jul 08 22:10:31 ubuntu signaling[1150]: hub.go:740: Register user wayne@0001 from 92.27.138.96 in unknown-country (Mozilla/5.0 (Android) Nextcloud-Talk v17.0.1) JOe–JkyNXwX2wnPrk0PZYr3_Az-7x4_526pj1Cf4I58PThhT2p1NnVzTFJmZ3NpTTBEcHM0TlNVZzctcVZwZURoVHhIbkhtbHVmaVlnSlBVYy1jV2c2TlpxMzI1ZGhVYXV6WHpib0o2Ymp6Yl9BSVRtME9RSWhONUxjbmgxYTZwWE1kdWtKVXBlMFhIbGJTRkpBU3oyVjJfRTdyOXhrWVhFemJYdk1VWnN1U1RZS3JGUFhQRmZXZElxZ3p5SVYzandVWDRJTk5afDEzMjQ1ODg4NjE= (private=MTY4ODg1NDIzMXxURW9LV29FaWcxVWJOWG5fY0RWLTY2NUdVdS0yQ2owTzlUREZvbnBMNHAyV3lWZE51Tl9JcWNadXVadHdWbnNleWw0eWpIZnZiX1FUQlRNVGpSUURSQnZyaXd0dVVlM0labm5VMXpXbkltZHlPMFhQSTNNTHhVYkFEWHdiMHFiWXBWZnhKWVJRSjRkU0lfU2JULTlCcHJuel8yMXlFZXBVRFNpcXNHTT184X0REDsN0dVU59qLi7sbz7M1yfUCQtvhPQ42BNRzG7w=)
Jul 08 22:10:33 ubuntu signaling[1150]: client.go:303: Error reading from 92.27.138.96: read tcp 127.0.0.1:8080->127.0.0.1:35784: use of closed network connection
this seems to occur during the issue with the connection
Signalling - config
[http]
listen = 127.0.0.1:8080
[https]
certificate = /etc/nginx/ssl/wh-computers.crt
key = /etc/nginx/ssl/wh-computers.key
[app]
debug = false
[sessions]
hashkey = my hash key
blockkey = my block key
[clients]
internalsecret = the-shared-secret-for-internal-clients ** this has not been set
[backend]
backends = 0001
allowall = false
timeout = 10
connectionsperhost = 8
[0001]
url = my nextcloud url
secret = nextcloud ui secret
[nats]
url = nats://localhost:4222
[mcu]
type = janus
url = ws://127.0.0.1:8188
[turn]
apikey = my api key
secret = my turn server secret
servers = My turn servers udp/tcp 3478 etc
[geoip-overrides]
[continent-overrides]
[stats]
[etcd]
[grpc]
turn server config
listening-port=3478
tls-listening-port=5349
cert=/etc/nginx/ssl/wh-computers.co.uk
pkey=/etc/nginx/ssl/wh-computers.key
fingerprint
use-auth-secret
static-auth-secret: my turn server secret
realm=rtc.wh-computers.co.uk
total-quota=100
bps-capacity=0
stale-nonce
no-multicast-peers
no-stdout-log
log-file=/var/log/coturn.log
syslog
simple-log
Janus Jcfg
interface ‘lo’
debug_level = 4
full_trickle = true
turn_rest_api_key = “my api key”
http.transport.jcfg - im unable to paste all of the config and the # so ive condensed
interface lo
json = “indented” # Whether the JSON messages should be indented (default),
# plain (no indentation) or compact (no indentation and no spaces)
base_path = “/janus” # Base path to bind to in the web server (plain HTTP only)
http = true # Whether to enable the plain HTTP interface
port = 8088 # Web server HTTP port
interface = “lo”
transport.websockets
interface lo
ws = true # Whether to enable the WebSockets API
ws_port = 8188 # WebSockets server port
ws_interface = “lo”
wss = false
``
Coturn Status
Jul 08 17:35:29 ubuntu turnserver[583]: 0: : IO method (general relay thread): epoll (with changelist)
Jul 08 17:35:29 ubuntu turnserver[583]: 0: : turn server id=0 created
Jul 08 17:35:29 ubuntu turnserver[583]: 0: : IO method (general relay thread): epoll (with changelist)
Jul 08 17:35:29 ubuntu turnserver[583]: 0: : turn server id=1 created
Jul 08 17:35:29 ubuntu turnserver[583]: 0: : Total General servers: 2
Jul 08 17:35:29 ubuntu turnserver[583]: 0: : IO method (auth thread): epoll (with changelist)
Jul 08 17:35:29 ubuntu turnserver[583]: 0: : IO method (auth thread): epoll (with changelist)
Jul 08 17:35:29 ubuntu turnserver[583]: 0: : IO method (admin thread): epoll (with changelist)
Jul 08 17:35:29 ubuntu turnserver[583]: 0: : SQLite DB connection success: /var/lib/turn/turndb
Jul 08 17:35:29 ubuntu systemd[1]: Started coTURN STUN/TURN Server.
signaling service
mcu_janus.go:294: Connected to Janus WebRTC Server 1.1.4 by Meetecho s.r.l.
Jul 08 22:51:32 ubuntu signaling[1150]: mcu_janus.go:300: Found JANUS VideoRoom plugin 0.0.9 by Meetecho s.r.l.
Jul 08 22:51:32 ubuntu signaling[1150]: mcu_janus.go:305: Data channels are supported
Jul 08 22:51:32 ubuntu signaling[1150]: mcu_janus.go:309: Full-Trickle is enabled
Jul 08 22:51:32 ubuntu signaling[1150]: mcu_janus.go:311: Maximum bandwidth 1048576 bits/sec per publishing stream
Jul 08 22:51:32 ubuntu signaling[1150]: mcu_janus.go:312: Maximum bandwidth 2097152 bits/sec per screensharing stream
Jul 08 22:51:32 ubuntu signaling[1150]: mcu_janus.go:318: Created Janus session 2490700262625372
Jul 08 22:51:32 ubuntu signaling[1150]: mcu_janus.go:325: Created Janus handle 7771927885688715
Jul 08 22:51:32 ubuntu signaling[1150]: mcu_janus.go:251: Reconnection to Janus gateway successful
janus status
Jul 08 22:53:43 ubuntu systemd[1]: Started Service for snap application janus-gateway.janus-gateway.
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Janus version: 1104 (1.1.4)
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Janus commit: f87538dbdd81c4d969770cef23566ed394eb8967
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Compiled on: Sun May 21 06:56:09 UTC 2023
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Logger plugins folder: /opt/janus/lib/janus/loggers
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: [WARN] Couldn’t access logger plugins folder…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: ---------------------------------------------------
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Starting Meetecho Janus (WebRTC Server) v1.1.4
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: ---------------------------------------------------
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Checking command line arguments…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Debug/log level is 4
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Debug/log timestamps are disabled
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Debug/log colors are disabled
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Adding ‘vmnet’ to the ICE ignore list…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Using 74.208.204.218 as local IP…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Token based authentication disabled
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Initializing recorder code
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Initializing ICE stuff (Full mode, ICE-TCP candidates disabled, full-trickle, IPv6 support disabled)
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: TURN REST API backend: (disabled)
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Crypto: OpenSSL >= 1.1.0
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: No cert/key specified, autogenerating some…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Fingerprint of our certificate: B9:D9:07:1B:92:BF:13:75:9A:0B:43:D7:F5:E4:F3:50:5D:9F:AE:21:26:F9:1C:1A:2B:D0:11:49:5B:35:82:CF
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Event handlers support disabled
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Plugins folder: /opt/janus/lib/janus/plugins
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading plugin ‘libjanus_audiobridge.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Sessions watchdog started
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Joining Janus requests handler thread
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS AudioBridge plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading plugin ‘libjanus_echotest.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS EchoTest plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading plugin ‘libjanus_nosip.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS NoSIP plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading plugin ‘libjanus_recordplay.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS Record&Play plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading plugin ‘libjanus_sip.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS SIP plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading plugin ‘libjanus_streaming.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS Streaming plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading plugin ‘libjanus_textroom.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS TextRoom plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading plugin ‘libjanus_videocall.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS VideoCall plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading plugin ‘libjanus_videoroom.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS VideoRoom plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Transport plugins folder: /opt/janus/lib/janus/transports
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading transport plugin ‘libjanus_http.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: HTTP transport timer started
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: HTTP webserver started (port 8088, /janus path listener)…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS REST (HTTP/HTTPS) transport plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading transport plugin ‘libjanus_mqtt.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: MQTT SSL support disabled
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: [WARN] MQTT support disabled for both Janus and Admin API, giving up
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS MQTT transport plugin destroyed!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: [WARN] The ‘janus.transport.mqtt’ plugin could not be initialized
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading transport plugin ‘libjanus_pfunix.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: [WARN] No Unix Sockets server started, giving up…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: [WARN] The ‘janus.transport.pfunix’ plugin could not be initialized
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading transport plugin ‘libjanus_rabbitmq.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: RabbitMQ SSL support disabled
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: [WARN] RabbitMQ support disabled for both Janus and Admin API, giving up
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: [WARN] The ‘janus.transport.rabbitmq’ plugin could not be initialized
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Loading transport plugin ‘libjanus_websockets.so’…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: [WARN] libwebsockets has been built without IPv6 support, will bind to IPv4 only
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: libwebsockets logging: 0
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: Websockets server started (port 8188)…
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: JANUS WebSockets transport plugin initialized!
Jul 08 22:53:43 ubuntu janus-gateway.janus-gateway[1769]: WebSockets thread started
Jul 08 22:53:44 ubuntu janus-gateway.janus-gateway[1769]: Creating new session: 2363319609241197; 0x7f95e8004550
Jul 08 22:53:44 ubuntu janus-gateway.janus-gateway[1769]: Creating new handle in session 2363319609241197: 1920618186178629; 0x7f95e8004550 0x7f95e8002f60
how can we increase realiability of the server? any help would be appreciated
many thanks
extra:
Nextcloud running behind NAT -
High performance backend on a public VPS
Jul 08 22:46:09 ubuntu signaling[1150]: client.go:303: Error reading from 92.27.138.96: read tcp 127.0.0.1:8080->127.0.0.1:40890: use of closed network connection -- ??