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 Uploading ....Common SIP (Signaling) Issues
Trunks Won't Register - Verify your registration string is correct and has the correct SIP Username and Password as found on your ClearlyIP Trunking Dashboard.
Example: username:password@1.us-central.clearlyip.com - On an asterisk based system you can run:
asterisk -rx 'pjsip show registrations' - You should see a status of Registered
- If you see Rejected, that could mean you have the wrong credintals or the registration timed out.
- Verify your PBX is advertising the correct External IP.
- If your router has a SIP ALG option, try disabling it. The vast majority of SIP ALG implementations cause more issues than they fix.
Note: SIP ALG is the Generic term for SIP Application Layer Gateway. Several Router manufactures have their open term for this feature; SIP Connection Tracking, SIP Transformations
Inbound calls don't connect at all or get refused- If this is the case you should see errors in your PBX's logs
- Make sure you have the correct IP or FQDN for your Host / Server Address, most PBX's will refuse connections from unknown hosts.
- Make sure you have an inbound route matching the DID you are calling into.
- For ClearlyIP Trunking we will send the 10-Digit DID (NPANXXXXXX) by default
Inbound calls drop immediately or are refused- If a call connects but drops within a second or so this could be due to an incompatible signal
- In your PBX log or Packet Captures you may see a message like "501 Method Not Implemented"
If this is the Case on a call over ClearlyIP Trunks this could be due to your PBX not supporting "In-call CID Updates", in that case contact support to have that feature turned off for your account.
Note: Calls lasting more then 2-3 seconds before dropping are more than likely not going to be SIP issues.
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