Paradyne COMSPHERE 3610 Operator's Manual page 157

AnswExtBU: Disab
Next Enab Disab
Answer External Dial Backup . This configuration option is an aggregate switch on-demand feature that
allows dial backup for a point-to-point 3600 Series DSU using an external dial backup unit (DBU). The
3600 Series DSU is forced to switch the aggregate data to the alternate DTE connector, the interface
connected to the aggregate data path rather than to the DTE (Port 1, either the V.35 or EIA-232-D interface).
Control of the aggregate switch can be automated in several ways.
When the remote site is expected to initiate a dial backup session, AnswExtBU should be enabled. With this
type of automated control, the DSU monitors the data terminal ready (DTR) lead on the aggregate port.
When the external DBU has established a call and has turned ON the data set ready (DSR) lead, the DSU
switches the aggregate data from the DDS line to the aggregate port via a crossover cable between the
DBU and the DSU. When the external DBU drops the call and the DTR signal is turned Off, the DSU
switches the aggregate data back to the DDS line. Note that when enable is selected, the DCP Backup
(Bkup) or NMS Standby Facility (sf) commands and the DCP Drop Backup (DrBU) or NMS Standby Facility
(sf) commands are ignored.
When a dial backup session is initiated at the local site, AnswExtBU should be disabled so that the DSU
controls the DSR lead on the aggregate port via the DSU's DCP or the NMS. By selecting the Backup
command from the DCP (Bkup) or Standby Facility (sf) command from the NMS, data is routed from the
external DBU through the aggregate switch to the DTE. As a result, the DSR signal is turned ON, which then
turns on the DTR signal at the external DBU. If configured for DTR call-control, the external DBU places the
call. Data is switched back to the DDS line when the DCP Drop Backup (DrBU) or NMS Standby Facility (sf)
command is issued, which turns the DSR signal Off on the aggregate port and, if the external DBU is
configured correctly, the DBU drops the dial connection.
If an internal dial backup module (DBM) is installed and active, this configuration option will not be
displayed.
Enab — Activates the DSU to automatically switch the aggregate data stream when the DTR signal is
turned ON. The DSU configuration option AggrSwitch must be enabled.
Disab — Allows the local DSU to control the call setup and take-down on an external DBU via the DSU's
DCP or the NMS. The DSU configuration option AggrSwitch must be enabled.
RLSD in MCMP:No
Next Yes No
Remote Line Signal Detect in Multichannel Multipoint . Defines whether switched RLSD is required for shared
backup with MCMP to support RLSD detection. This configuration option is only displayed when a Switched
56 DBM is installed.
Yes — Switched RLSD is required.
No — Switched RLSD is not required.
3610-A2-GB91-90
Table 6-6
(7 of 8)
General Configuration Options
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July 1999
Configuration Options
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