Paradyne COMSPHERE
3610, Operator'S Manual

Page: 39 / 310

Introduction
1-23 3610-A2-GB91-90 July 1999
Figure 1-5. Sample Diagnostic Configuration
Rate Adaption
Rate adaption allows the DSU to support a low-speed
application on a high-speed DDS circuit. When additional
bandwidth is required, the customer can reconfigure the
DSU to a higher speed without requiring a new DDS
circuit. Rate adaption is supported for both point-to-point
and multipoint configurations.
To enable rate adaption, set the DSU’s PrtSp(Kbps)
configuration option to any valid speed that is less than
the DSU’s Rate(Kbps). The DSU performs rate adaption
whenever the port speed is set to less than the DDS rate.
(Refer to Table 6-5,
DSU Configuration Options , in
Chapter 6 for further information.)
Aggregate Switching
Aggregate Switching provides an additional mode of
dial backup. When Aggregate Switching (AggrSwitch) is
enabled, the DSU provides its internal aggregate data
stream, including diagnostics and framing on the alternate
V.35 or EIA-232-D interface of Port 1. Aggregate data is
then switched or bridged with the data on the DDS line.
This aggregate port can be cabled to a TDM circuit card
configured for digital bridge and to external dial backup
devices, such as DBM-Ss.
There are four types of aggregate switching dial
backup configurations:
•
Point-to-point (single port)
•
Multipoint (single port)
•
TDM
•
MCMP
During aggregate switching, commands addressed to
the tributary DSU and DBM are automatically routed over
the aggregate port through the backup circuits. If a dial
backup is active, Change or Display Options commands
should be addressed to the tributary DBM via the control
DBM-V, DBM-S, or DBM-D.
For further explanation of the TDM and MCMP
configurations, order the COMSPHERE 3600 Series Data
Service Units, Models 3610 and 3611, Time Division
Multiplexer, Multichannel Multipoint, and Digital Bridge
Options, Applications Guide. Single-port aggregate
switching configurations are discussed in the following
paragraphs.