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sysdat.fm
P31003-H3560-S403-54-7620, 09/05
HiPath 3000 V6.0, HiPath 5000 V6.0, Provisional Service Manual
2-29
System Data
Dynamic Configuration Rules
2.6.4 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 (see Section 2.6.8.1.4, “Calculation Example 4: IP Networking Connections and Voice
over PPP (ISDN Routing) to HiPath 3750, HiPath 3700”), 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).
2.6.5 DMC (Direct Media Connection) Channels
When the DMC interworking feature is active in an IP network between HiPath 3000 and HiPath
4000, gateway connections are set up over DMC channels. From the user’s perspective, a DMC
channel is a gateway channel that provides a gateway connection between HiPath 3000 and
HiPath 4000. The fact that a DMC channel must serve both a master and slave connection re-
sults in a DSP channel reduction.
Note: The number of gateway channels available (DSP channels) is reduced as soon as the
DMC interworking feature is activated with HiPath 3000 Manager E. In this case, a Digital Sig-
nal Processor (DSP) can only provide up to 80% of all possible channels (for example: 6 in-
stead of 8 DSP channels, 12 instead of 16 DSP channels, etc.).
2.6.6 ISDN Routing/PPP Channels
HG 1500 boards can also be used as ISDN routers. The ISDN router can connect two physi-
cally separate IP networks together via an ISDN line. Channel bundling can be used to adjust
the required bandwidth.
The system reserves the B channels required for ISDN routing and thus restricts the available
gateway channels.
Table 2-11 HG 1500 - Board-Specific Sum of PPP Channels and Gateway Channels
(Maximum Numbers)
HXGM3 HXGS3
HXGR3
STMI2
with-
out
PDM1
with 1
x
PDM1
with 2
x
PDM1
with-
out
PDM1
with 1
x
PDM1
without
PDMX
1
1 PDMX is not currently released.
Sum of PPP channels (for ISDN
routing) and gateway channels 16 24 32 8 16 32