RADVision L2W-323, User Manual

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Overview
2-10
Signaling Protocols Supported for the BRI Ports
The L2W-323 Gateway supports seven signaling protocols: ETSI, 5ESS, NI-1 (National
ISDN-1), DMS100, NTT, ETSI_PTP and 5ESS_PTP. The signaling protocol is
configurable per ISDN BRI port and depends on the signaling protocol used by your
country’s ISDN network.
Dialing Protocols Supported for the V.35 Ports
The L2W-323 Gateway supports three dialing protocols: V.25bis, RS-366 and Dedicated.
The dialing protocols are configurable per port and depend on the V.35 port type and
connection unit.
The V.35 DCE ports connect the Gateway directly to a DTE H.320 terminal, for example an
MCU. The dialing protocol used is RS-366.
When a V.35 DTE port is connected to an IMUX or other terminal adapter, the supported
dialing protocols are RS-366 and V.25bis.
V.25bis inband dialing allows the sending of control signals during a call over the same
frequency as the data. This is an advantage over RS-366 outband dialing where the control
signals are transmitted outside of the data signal and once the call is connected, control
signals can no longer be transmitted.
When connected to a modem, the dialing protocol is a dedicated one. The L2W-323
Gateway supports three types of dedicated connections:
!"
GW-GW for instances when the L2W-323 Gateway is connected to another L2W-323
Gateway via modems.
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GW-H.320 (DCD ON) for instances when the L2W-323 Gateway is connected to an
H.320 terminal via modems. This dialing protocol is used for terminals that always
assert DCD (Data Carrier Detected). In this mode, no incoming calls are accepted to
this port.
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GW-H.320 (DCD Control) for instances when the Gateway is connected to an H.320
terminal via modems. This dialing protocol is used for terminals that only assert DCD
when initiating or answering a call.