10.6.2. HG 3500 Voice Gateway 
IMPORTANT:
IP packets with the used ports (hard-coded and
configured using AMOs) must be routed transparently in the IP network,
i.e. the packets must not be manipulated, e.g. by a firewall). Functional
problems can be the result of non-transparent routing!
These boards are installed in the OpenScape 4000 central system. A
maximum of 83 HG 3500 boards can be configured in a system.
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PHY
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10/100 Base T - autosensing or can be permanently
set
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MAC address
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Permanently programmed on the board, ->sticker
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IP address
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Configured in the 4000 system, can be set. It
must be in the same network segment as the central processor.
The
address is assigned to the slot in the system. When a board is exchanged,
the new one automatically adopts the IP address.
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IEEE 802.1 p/q VLAN tagging
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Configurable; priority bits are always set when
active. See Table
3 “TOS values” in document “Gateways HG 3500 and HG
3575”.
The VLAN ID can be set. Configuration in the OpenScape
4000 system.
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TOS/DiffServ
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The six highest bits in the TOS byte can be
set. See Table
3 “TOS values” in document “Gateways HG 3500 and HG
3575”. Configuration in the OpenScape 4000 system.
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Protocols/ports
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See Chapter
20, “IP Ports” in the document “Gateways HG 3500 and
HG 3575”.
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Routing
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Routing table configured in the OpenScape 4000
system with a default route and up to eight additional routes. Routing
is identical for all HG 3500s in the system.
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Number of connections
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Up to 30/60/120 RTP and RTCP connections to
any access points, depending on the hardware used.
Connection
setup controlled completely from OpenScape 4000. H.323 Fast Connect for
direct media connections outside the IPDA gateway network, no gatekeeper
necessary.
See Section 3.2,
“Load Calculation for a HG 3500” for connection
bandwidths.
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