Incoming Call: 172.18.24.103/mac=$mac&local=$local
Outgoing Call: 172.18.24.103/remote=$remote&phone_ip=$phone_ip
On hold: 172.18.24.103/program_version=$program_version
During incoming call, outgoing call and call hold, capture the trace on the phone and exam the packets. We
can see the phone send Action URL with actual values to SIP server to notify phone events. In the following
screenshot, from top to bottom, the phone events for each HTTP message are: Outgoing Call, Incoming
Call and On Hold in the format of the defined action URL with the parameters replaced with actual values.
Figure 26: Action URL Packet
The P values listed in below table are for the options under phone web UI->Settings->Outbound
Notification->Action URL.
Table 18: Action URL Parameters P-values