SIP

From ServersCheck Wiki

This type of check is the first one to monitor VoIP systems. It is designed to monitor SIP based communications. SIP clients typically use TCP or UDP (typically on port 5060) to connect to SIP servers and other SIP endpoints. SIP is primarily used in setting up and tearing down voice or video calls.

Note: ServersCheck supports monitoring of SIP servers running on port 5060 through UDP only

Each SIP client has a unique address (similar to a telephone number). You will need to have a valid SIP number for this check type to work. A sip number is typically something like: sip:8101220091@freevoip.fonosip.com

You need to provide 2 values for this check type: - SIP server (IP address or host name) - SIP Identification (see above)

The check will use the above details to send a SIP data packet with the REGISTER command using the UDP protocol on port 5060.

When a SIP data packet is returned then the SIP check is considered OK. It also returns the time between sending the SIP data packet and receiving the server reply. The time is indicated in ms. This time can be used to monitor the QoS (Quality of Service). The longer the time the higher chances are that you may experience quality issues on your line.

The check type times out after 5 seconds. If a server does not reply within that time frame then it returns an error.