Specifications

Technical Concepts Nur für den internen Gebrauch
A31003-H3580-M103-2-76A9, 01-2009
9-18 HiPath 3000/5000 V8 - HG 1500 V8, Administrator Documentation
hg-09.fm
Configuration Rules for HG 1500 V8 in HiPath 3000 V6
9.4.6 IP Networking Channels (PBX Networking Channels)
IP networking channels are used to connect between communications systems. A difference
is made between connections requiring a gateway channel and direct payload connections. De-
pending on the type of connection, the following resources are required for successful connec-
tion setup.
If one of the required resources is unavailable, the connection request will be rejected.
The HiPath 3000/5000 Manager E determines how many of the maximum number of trunks
available should be set up as IP networking channels (IP networking trunks). The maximum
number of IP networking trunks permitted by the system can be found in Table 9-15.
9.4.7 Bandwidth Control for IP Networking Channels (PBX Networking
Channels)
If IP networking channels are routed over the PPP channels (ISDN routing) of an HG1500
board, there is only bandwidth control when the router is on an HG1500 gatekeeper (signaling
gateway).
If the router is on an HG1500 gateway (media gateways), there will be no bandwidth control.
9.4.8 DMC (Direct Media Connection) Channels
When the DMC feature is enabled in an IP network between HiPath 3000 and HiPath 4000,
gateway connections are carried out over so-called DMC channels. From the user’s point of
view, a DMC channel is a gateway channel that allows for a gateway connection between Hi-
Path 3000 and HiPath 4000. Since a DMC channel must operate both a master and slave con-
nection, there is a reduction in the number of DSP channels.
Note: The number of available gateway channels (DSP channels) is reduced as soon as the
DMC interworking feature is enabled via HiPath 3000/5000 Manager E. In this case, a Digital
Signal Processor (DSP) can only allocate 80 % of the total number of available channels (e.g.
6 instead of 8 DSP channels, 12 instead of 16 DSP channels, etc.).
9.4.9 ISDN Routing / PPP Channels
HG 1500 boards can also be used as ISDN routers. ISDN routers connect to physically sepa-
rate IP networks over an ISDN trunk. The required bandwidth can be adjusted with channel
bundling.
Type of connection Trunk Gateway channel
direct payload connection required not required
gateway connection required required