Specifications

MX-2100/2104 Installation and Operation Manual Chapter 1 General Information
Application Considerations 1-25
Location A Location C
A-to-B A-to-C
A-to-C
B-to-C
Location B
Link A
Link B
Dropped
Info
Dropped
Info
Bypassed
Info
Figure 1-14. Bypassing Parameters
The manual allocation is performed at the level of individual channels, therefore
the channels of a given I/O module can be routed to different MX-2100 units. This
is however possible only if the following conditions are met:
• The I/O modules are not located at a bypassing location, i.e., are not installed
in a MX-2100 unit with an active KDI module.
• The I/O modules whose channels are to be routed to different MX-2100 units
do not use end-to-end transmission of control signals; otherwise, all the
channels of an I/O module using end-to-end transmission of control signals
must be routed to a single module (this implies that they must be bypassed or
dropped together at the same MX-2100).
In the typical bypassing application shown in Figure 1-15, two MX-2104
multiplexers, located at two branch offices, are connected to MX-2100 located at
the central site. The KDI module installed in MX-2100 located at the central site
provides a direct connection between the two MX-2104 units via the central site
for selected channels. The connection is performed by transferring (bypassing) the
desired group of main link frame bits between the two main link modules. For
example, in Figure 1-15 the bypassed time slots could be used to connect between
the two KVF.4 modules identified by No. 2, which are installed in the two
MX-2104 units.