hello guys,
I have created SIP outbound trunk id :...
# telephonyb
brainy-plastic-79052
12/18/2025, 8:30 AMhello guys,
I have created SIP outbound trunk id : ST_zuFUX3yPnpHg and dispatch rule id : SDR_CihCRfuoKNfr, when i tried to CreateSIPParticipantRequest i got response
{
"message": "Failed to create SIP participant: TwirpError(code=deadline_exceeded, message=twirp error unknown: request timed out, status=408)",
"status": "failure"
}
I want figure out what happing
r
refined-appointment-81829
12/18/2025, 3:23 PMBest way to debug this sort of issue is to look at your dashboard for that project:
https://cloud.livekit.io/projects/p_/telephony
Then click on calls and scroll down the call that failed. You should see an error message there that is helpful.
For instance in this case I see:
transport<TCP> dial err=dial tcp nnn.nnn.nnn.nnn:5060: connect: connection timed outb
brainy-plastic-79052
12/19/2025, 4:20 AM@refined-appointment-81829 my I know how livekit sends SIP INVITE request.
Exotel they provided me 4 different ip address
r
refined-appointment-81829
12/19/2025, 1:57 PM> may I know how livekit sends SIP INVITE request.
Yes LiveKit will look up the trunk for the phone number/SIP URI then open a connection (for TCP or TLS) then send the invite to the URI specified
b
brainy-plastic-79052
12/22/2025, 6:17 AMhello @refined-appointment-81829 I changed host name and port I get new Error this. Can I share IP : 161.115.180.235 for whitelisting my region is India, that IP is show in Event payload
Copy code
{
"message": "Failed to create SIP participant: TwirpError(code=permission_denied, message=twirp error unknown: unexpected status from INVITE response: sip status: 403: Forbidden, status=403)\n403\nForbidden",
"status": "failure"
}brainy-plastic-79052
12/22/2025, 10:01 AMhello @refined-appointment-81829 I have contacted Exotel, and they told me to whitelist their Media IPs on the LiveKit server. The IP addresses are listed below:
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+------------------+------+--------------+
| IP Address | Type | Port Range |
+------------------+------+--------------+
| 182.76.143.61 | UDP | 10000–40000 |
| 122.15.8.184 | UDP | 10000–40000 |
| 14.194.10.247 | UDP | 10000–40000 |
| 61.246.82.75 | UDP | 10000–40000 |
| 141.148.205.58 | UDP | 10000–40000 |
| 140.245.21.212 | UDP | 10000–40000 |
| 144.24.101.99 | UDP | 10000–40000 |
| 141.148.216.227 | UDP | 10000–40000 |
| 80.225.231.27 | UDP | 10000–40000 |
| 161.118.165.122 | UDP | 10000–40000 |
| 161.118.161.158 | UDP | 10000–40000 |
| 13.203.182.84 | UDP | 10000–40000 |
| 13.203.81.133 | UDP | 10000–40000 |
| 13.204.127.96 | UDP | 10000–40000 |
| 35.154.237.135 | UDP | 10000–40000 |
| 43.205.65.254 | UDP | 10000–40000 |
+------------------+------+--------------+r
refined-appointment-81829
12/22/2025, 4:21 PMGreat, Did you allow list them?
b
brainy-plastic-79052
12/23/2025, 3:56 AMI'm using livekit cloud, how can I allow IP addresses
r
refined-appointment-81829
12/23/2025, 2:29 PMIt is a field when you configure your Trunk.
See: https://cloud.livekit.io/projects/p_/telephony/trunks
Open your Trunk, add the IP addresses
b
brainy-plastic-79052
12/23/2025, 5:20 PMI'm using an Outbound trunk, how can I add IP addresses in Outbound trunk there is no field for allwowed_addresses
r
refined-appointment-81829
12/23/2025, 5:22 PMWhy do you need an allow list on outbound trunk. In that case LiveKit is originating the data not the SIP provider.
b
brainy-plastic-79052
12/29/2025, 5:08 AM@refined-appointment-81829 may I get PCAP file of Call ID : SCL_9jJWyQgGzXyt
r
refined-appointment-81829
12/29/2025, 5:17 PMI do not find a PCAP for that call