Dbm Common Capabilities - Paradyne COMSPHERE
3610 User Manual

DBM Common Capabilities

Integrated DBMs ensure continuity of service if the
DDS connection fails. DBM childboards are attached to
the DSU circuit card. The DBM option offers the
following features:
Automatic backup and restoration: When
configured for automatic operation, the DSU/DBM
detects a network failure, performs the dial backup,
and restores the data path to the DDS circuit when
the network returns to service.
Interoperability: Provides digital DBM
compatibility. The ISDN DBM, 2-wire Switched 56
DBM, and 4-wire Switched 56 DBM can
communicate with each other at 56 kbps.
Independent operation: Although the DSU and
DBM are functionally integrated, you can configure
each separately and run most tests independently.
Security: Provides multiple levels of call setup
security. Prevents unauthorized access and invalid
calls to the DBM.
Dial backup support: Provides DBM support of
TDM or MCMP networks.
Flexible device control: Provides control of the
DBM from an NMS, the DSU's front panel, an
async terminal, or automatically by the DSU/DBM.
DBMs support a comprehensive set of diagnostics,
tests, and commands.
Installation choices: Orderable from the factory as
one unit with the dial backup option installed on the
DSU or a DBM field-installable upgrade.
V.13 operation: Provides pseudo-switched carrier
operation from the tributary to the control.
Non-interfering testing: Allows data to be sent on
a DDS facility while performing a test on the active
DBM over the dial backup facility without
disrupting data on the DDS line.
Bridging: Digital bridging provides dial backup of
multipoint configurations. When ordered from the
factory as a DBM-X for Model 3611, does not
function as a DSU. A DBM-X is a Model 3611
DBM-D, DBM-I, DBM-S, or DBM-V.
3610-A2-GB46-60
V.32bis DBM
The V.32bis 14.4 kbps analog DBM childboards offer
the following features:
Multispeed point-to-point backup: Provides
point-to-point service over the 2-wire dial network
at a customer-specified rate at full-duplex.
Data rates: Provides DBM speeds up to 14.4 kbps
using standard dial lines.
2-Wire Switched 56 DBM
The 2-wire Switched 56 DBM childboards provide dial
backup capability through the switched 56 kbps digital
service. The Switched 56 DBM offers the following
features:
Network compatibility: Provides 2-wire Switched
56 DBM service restoration of failed DDS circuits
over compatible switched 56 kbps services from the
Local Exchange Carrier (LEC) or long distance
carrier for:
— AT&T's ACCUNET Switched 56 kbps Service
— MCI's 56 kbps Switched Digital Service
— Northern Telecom's DataPath 2-wire Service
— US SPRINT's VPN56
Data rates: Operates at 56 kbps full-duplex and
uses proprietary rate adaption to support data rates
that are less than 56 kbps.
4-Wire Switched 56 DBM
The 4-wire Switched 56 DBM childboards provide dial
backup capability through the switched 56 kbps digital
service. The Switched 56 DBM offers the following
features:
Network compatibility: Provides 4-wire Switched
56 DBM service restoration of failed DDS circuits
over compatible switched 56 kbps services from
LEC or long distance carrier for:
— AT&T's ACCUNET Switched 56 kbps Service
— MCI's 56 kbps Switched Digital Service
— US SPRINT's VPN56
Data rates: Operates at 56 kbps full-duplex and
uses proprietary rate adaption to support data rates
of less than 56 kbps.
December 1996
Product Introduction
1-3