Free SIP OPTIONS check
Is your phone system answering? Send one SIP OPTIONS request, a SIP ping, to any SIP server, whether it is a PBX, an SBC, a SIP proxy or your SIP provider, and see the response code and the round-trip time in a few seconds.
What the check does
PingVo sends exactly one SIP OPTIONS request from a test agent in Sweden, waits up to 2 seconds, and shows the status code, its standard meaning and the round-trip time. There is no call, no authentication and no retry. Any SIP response means the server is reachable and processing signalling; a 401 or 407 is the usual answer from a server that expects credentials.
Each address can be checked a few times an hour. In PingVo the same check runs on a Route every minute, from outside your network or from a PingVo agent inside it, with alerts when the SBC stops answering; add real test calls to see whether a line actually connects. See how PingVo monitors SIP trunks.
What the response code means
| Code | Meaning for this check |
|---|---|
| 200 | Up and answering |
| 401 / 407 | Up. It wants credentials, which is normal for an SBC |
| 403 | Up, but it only accepts listed IP addresses |
| 404 / 480 / 484 | Up, but it doesn't know the address asked for |
| 405 / 501 | Up, but it doesn't support OPTIONS |
| 503 | Answering, but overloaded, in maintenance or with no upstream |
| No response | Down, filtered by a firewall, or not speaking SIP on this port |
Full list of SIP response codes
Run a SIP server and want it excluded? Contact contact@pingvo.cloud.
Know a line is down before your callers do
Line checks, real test calls and IVR verification for your call-center numbers, with alerts that say whose side failed.
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