For Basic request messages, ( ) is used for querying the SIP server capabilities.
If the video format set to Smooth, the system ensures the specified video resolution first. ( )
The FE port IP address cannot be in the same network segment as the GEO or GE1 port IP address. Otherwise, network faults may occur, and the ALM indicator on the front panel is on. ()
The SIP works on the basis of messages which are the base units for the interaction between the SIP client and server().
Call abnormalities occur when non-compatible firewalls start the H.323 ALGs. ()