Specifications

HiPath 3000/5000 in the LAN Network For internal use only
P31003-H3560-X100-1-7618, 09/05
4-2 HiPath 3000/5000 V6.0, System Description
3000sb4.fm
Network Analysis
4.1.1 Protocols (H.323, CorNet IP)
4.1.1.1 H.323
As a collective term, H.323 comprises the following topics:
● Signaling (H.245, etc.)
● Video transmission
● Voice data transmission/voice compression such as
– G.723.1 (5.3/6.3 Kbps)
– G.729A (8 Kbps)
● Data applications (application sharing, T.120)
This shows that this standard comprises considerably more than necessary for pure voice data
transmission via data networks. H.323 was developed for multimedia applications.
4.1.1.2 CorNetIP
IP interworking will be based on the CorNet N tunneled within H. 323 Protocol.
Bandwidth requirement
HG 1500 is designed to optimize bandwidth utilization. It implements the following functions for
this:
● Silence suppression
● Transmission of background noise during pauses between speech, thereby saving band-
width
● Dynamic voice/fax recognition/modem
Bandwidth availability
The bandwidth required for voice must be available at all times in the network. You must mea-
sure and analyze the network to ensure this is the case before installing components.
Bandwidth control for IP networking channels (PBX networking channels)
If IP networking channels are routed over the PPP channels (ISDN routing) on an HG 1500
board, bandwidth control is only performed if this board is an HG 1500 gatekeeper (signaling
gateway).
Bandwidth control is not performed if the router is located on an HG 1500 gateway (media gate-
way).