Video Bridge

It is multipoint but it leases the capacity of the line specially. So in a sense it behaves like a point to point but a multipoint.

point to point and multipoint

It is Point-to-Point connection because multipoint connection needs more than two end points.

Point-to-point interfaces are used in serial communication. These types of connections are assumed to transmit solely to the station at the opposite end. The examples of Point-to-point are EIA/TIA 232, EIA/TIA 449, X.25, Frame Relay, T-carrier, and OC3 - OC192.

simply: 1 source port to 1 destination port

Point-to-multipoint connects one station to several other stations. Point-to-multipoint are of two types • Point-to-multipoint Non-Broadcast • Point-to-multipoint Broadcast In Point-to-multipoint Non-broadcast, the communication is replicated to all the remote stations. Only specific, selected stations hear the replicated communication. The examples are Frame Relay and ATM.

simply: 1 source port to multiple destination ports