Paradyne COMSPHERE 3615 - Manual (Page 15)

About Your DualFlow DSU
1-3 3615-A2-GB20-20 December 1996
Switched 56 DBMs
The Switched 56 DBM is attached to the DSU and
offers dial backup capability through the Switched
56 kbps digital service. The Switched 56 DBM offers the
following features:
•
Nondisruptive point-to-point connections. The
DBM sends its line data to the EIA-232 port, which
is not used for DDS data. DBM and DDS
connections can be active at the same time.
•
Independent operation. Although the DSU and
Switched 56 DBM are functionally integrated, they
are configured separately and can run most tests
independently (e.g., you can run a test on the DBM
while a test is running on the DSU).
•
Network compatibility. The Switched 56 DBM,
either the 2-wire or 4-wire version, provides service
over compatible Switched 56 kbps switched
services, such as AT&T’s ACCUNET
r Switched
56 kbps Service, MCI’s 56 kbps Switched Digital
Service, Northern Telecom’s DataPath
t service,
and US SPRINT’s VPN56 using either dedicated
2-wire or 4-wire access, or local exchange carrier
2-wire or 4-wire switched access. This DBM
operates at 56 kbps full-duplex, and uses
proprietary rate adaption to support data rates of
less than 56 kbps.
•
Security. The Switched 56 DBM offers four levels
of call setup security: None, Password, Callback,
and Alarm. Alarm allows the DBM to only answer
incoming calls when there is a Facility Alarm on
the DDS line.
•
DTR control setup. When configured for DTR call
control (DTRCallCon: Orig) backup, the
DSU-DBM initiates dial backup when the DTE
raises data terminal ready (DTR) to the DSU-DBM.
•
Management control. Dial backup functions can
be controlled from a 6700 or 6800 Series NMS, the
DSU’s DCP, or automatically by the DSU-DBM.
•
Rate Adaption. With this feature, the DSU-DBM
can adapt its data rate to a low-speed application
while operating over a higher speed switched
circuit.
•
Port Async/Sync. The port asynchronous-to-
synchronous feature makes it possible to send
asynchronous data over the synchronous network.
•
Nondisruptive Diagnostics. When set up to use
nondisruptive diagnostics, the local DSU-DBM
sends diagnostic data over the dial connection
without interrupting or disrupting customer data.
•
Full tributary diagnostics. The DSU-DBM
supports a full complement of diagnostic tests and
commands when a call is established on a backup
line. Diagnostics can be addressed to and sent to
tributaries from a 6700 or 6800 Series NMS
workstation, or from the DCP of a control DSU.
Technical Specifications
Tables 1-1 through 1-5 list the technical specifications
for the following:
•
General specifications that apply to all DualFlow
DSUs, regardless of the type of DBM installed
(Table 1-1)
•
Specifications for the Model 3615 and 3616 DSU
only (Table 1-2)
•
Specifications for the V.32 DBM (Table 1-3)
•
Specifications for the 4-Wire Switched 56 DBM
(Table 1-4)
•
Specifications for the 2-Wire Switched 56 DBM
(Table 1-5)