Tabelle F-3

Application layer protocol: proprietary

IF function	Protocol	Server Port	Internal/External	Description	Conf.
MEB H.225	TCP	1720	External	Call signaling for H.323 bundling	Yes
MEB T.38	UDP	1
External	T.38 payload data (fax)	(Yes)
MEB RTP / RTCP	UDP	1
External	RTP payload data	(Yes)
MEB H.245	UDP	12000-12100	Internal/External	Data control channel	Yes

1Calculation of the port area: Beginning with 29100 (base port) the MEB receives the first 270 ports for RTP/RTCP and T.38. Generally ports 29100 - 29189 are used for the first MEB. However, generally reserved are: 29100 - 29369.