Product introduction, Tdm/mcmp common capabilities, Chapter 1 – Paradyne COMSPHERE 3611 User Manual
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3610-A2-GB48-50
September 1996
Product Introduction
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DSU with Digital Bridge Capability
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TDM/MCMP Common
Capabilities
The TDM/MCMP option is an additional circuit card.
TDM capability allows up to six independent ports to
share one standard digital point-to-point facility. MCMP
capability allows up to six ports to share one standard
56 kbps multipoint facility.
The TDM option can be software-defined to provide
one of the following:
•
TDM
•
Digital bridge capability
The MCMP option can be software-defined to provide
one of the following:
•
MCMP
•
TDM
•
Digital bridge capability
Common features are:
•
Async/Sync conversion: Provides point-to-point
and multipoint asynchronous-to-synchronous data
conversion for DTE ports for both EIA-232 and
V.35. The DSU can send asynchronous data over a
synchronous network.
•
FEP port sharing: Provides a method of
connecting a front-end processor (FEP) to two
consecutive ports to broadcast the same message
over the network and the shared ports. Up to three
separate FEP port-sharing groups can be selected.
Each group consists of two adjacent ports (1 and
2,
3 and 4, 5 and 6).
•
Elastic store per port: Provides a transmit elastic
store buffer for each port to support extended
circuits. Supports both digital and analog
extensions.
•
Switched-carrier emulation: Provides optional
switched-carrier emulation for each port for both
inbound (toward the control DSU) and outbound
(toward the tributary DSU) directions.
NOTE
The V.34 DBM does not support
applications requiring Ext to
RXC DBM transmit clock source
configurations, including:
•
Multipoint backup
— Central-Site Bridge
— Extended Site Bridge
— FEP Backup Modes
•
Tail circuits
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