AEQ
PHOENIX MERCURY
49
SIP protocol operation diagram. Phase 1: Registration. Phase 2: Search for the called device in
the SIP server database. Phase 3: Establishment of the connection
This working method, supported by external SIP servers, enables the physical position of a
device to be made independent from its logic identifier and, through the use of the SIP protocol,
makes it unnecessary to know more data regarding the called device than its URI.
During the establishment of the communication phase, the encoding algorithm is negotiated
simultaneously, based on the Link Profiles / SIP Codec Profiles defined in each of the devices
at the two ends of the connection circuit.
C4.2. Possible work scenarios.
Depending on the type of network to which the PHOENIX MERCURY is connected, the codec
will have one or another type of IP address available to it.
