Workpoint Clients
P31003-H3550-S403-4-7620, 02/05
10-70 HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
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IP Telephony (Voice over IP)
10.6.4.2.3 IP Networking Channels (PBX Networking Channels)
IP networking channels are used for connections between communication systems. In this
case, a distinction must be made between connections that use a gateway channel and direct
payload connections. Depending on the connection, the following resources are required for
successful connection setup.
A connection request is rejected if a required resource is unavailable.
HiPath 3000 Manager E is used to define how many of the maximum number of lines are to be
configured as IP networking channels (IP network trunks). The maximum number of IP network
trunks can be found in Table 2-7.
10.6.4.2.4 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.).
Connection type Line Gateway channel
Direct payload connection Required Not required
Gateway connection Required Required
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