Paradyne COMSPHERE
3610, Руководство оператора

Страница: 43 / 310

Introduction
1-27 3610-A2-GB91-90 July 1999
When the local site is originating and terminating a dial
backup session via an external DBU, the DSU’s Answer
External Backup configuration option should be disabled.
When disabled, the 3600 Series DSU controls aggregate
switching and the state of the DSR lead on the aggregate
port. Using the Backup (Bkup) command from the DCP
or the Standby Facility (sf) command from the 6800
Series NMS, the data is routed to the aggregate switch and
the DSR lead is turned on. The 6700 Series NMS provides
two choices from the Dial Standby status: Return to Lease
or Return to Dial. (When the DSR lead is turned on at the
DSU, the DTR lead is turned on at the external DBU’s
DTE interface.) If the external DBU is configured for and
is capable of DTR call origination, the external DBU
places the call when it detects that DTR is on.
Similarly, when the DSU turns the DSR lead off to
switch the aggregate data path back to the DDS line by
issuing the Drop Backup (DrBU) command from the DCP
or Standby Facility (sf) command from the 6800 Series
NMS, the external DBU is signaled to drop the active call.
The 6700 Series NMS software provides a Commands
pull-down window to access Standby Facility. If the
external DBU is capable of and configured for DTR
disconnect, the external DBU drops the call when DTR is
turned off at its DTE interface.
Figure 1-8 illustrates the crossover of data, as well as
the crossover of DTR and DSR lead signals, that occurs
between the external DBU and the DSU’s aggregate port.
(Order the COMSPHERE 3600 Series Data Service Units,
Models 3610 and 3611, Dial Backup and SNA Diagnostic
Interface Options, Applications Guide for backup
information on using the internal DBM.)
Technical Specifications
•
Table 1-8 lists the general technical specifications
for the 3600 Series DSUs, DBMs or DBM-Vs,
DBM-Ss, DBM-Ds, TDMs, and MCMPs.
•
Table 1-9 lists the technical specifications that
apply to the DSU only.
•
Table 1-10 lists the technical specifications specific
to the V.32 DBM or DBM-V (the DBM-V
specifications are the same as the DSU with DBM).
•
Table 1-11 lists the technical specifications specific
to the 4-wire Switched 56 DBM or DBM-S.
•
Table 1-12 lists the specifications specific to the
2-wire Switched 56 DBM or DBM-D.
•
Table 1-13 provides 3600 Hubbing Device
specifications for the Model 3610 DSU.
•
Table 1-14 lists the technical specifications for the
TDM.
•
Table 1-15 lists the technical specifications for the
MCMP.
•
Table 1-16 lists the technical specifications for
digital bridge capability.