MGCP Calls and Connections
End-to-end calls are accustomed by abutting two or added endpoints. To authorize a call,
the alarm abettor instructs the aperture that is associated with anniversary endpoint to accomplish a connection
with a specific endpoint or an endpoint of a accurate type. The aperture returns
the affair ambit of its affiliation to the alarm agent, which in about-face sends these session
parameters to the added gateway. With this method, anniversary aperture acquires the necessary
session ambit to authorize RTP sessions amid the endpoints. All connections
that are associated with the aforementioned alarm will allotment a accepted Alarm ID and the aforementioned media
stream. Figure 5-18 illustrates the bureaucracy and teardown of an MGCP call.
At the cessation of a call, the alarm abettor sends a DeleteConnection (DLCX) appeal to
each gateway.