RAD Data comm MPW-1 Specifications download pdf (Page 22)

Chapter 1 Introduction Installation and Operation Manual

1-10 Functional Description MPW-1 MP-4100 Ver. 2.0

all of the 32 timeslots of the port are handled as a single data stream and

are transparently connected to another user-selected port. In the framed

mode, only the payload timeslots are transparently connected (31 timeslots

when connecting to another E1 port, 24 for connecting to a T1 port).

The CL module takes care of all the tasks necessary to enable the MPW-1 TDM

cross-connect matrix to perform the desired services in accordance with the

cross-connect mode selected for each port, in a way similar to the functions

performed by the cross-connect matrix of each I/O module. Therefore, all the

routing functions are actually performed on the CL module: the MPW-1 matrix

only handles the transfer of payload between the chassis bus side and the

internal DS1 ports of the module, in accordance with the instructions received

from the CL module.

The result is that when using the DS0 cross-connect mode, the following services

are available for the traffic flowing through the module ports:

• Services related to TDM traffic:

 Connection of timeslots from I/O or PDH ports of other modules installed

in the Megaplex-4100 to the desired MPW-1 internal DS1 port. When

signaling support is enabled for the corresponding DS1 port, the matrix

also routes the signaling information associated with each voice timeslot

in parallel with the timeslot data.

 Bypassing timeslots among the MPW-1 internal DS1 ports, or among

ports (channels) located on other modules and the internal DS1 ports

located on the MPW-1 module.

 Unidirectional routing of timeslots, and broadcasting from one timeslot to

multiple destinations.

In addition to payload routing, the TDM cross-connect matrix is also used to

activate local and remote loopbacks on selected timeslots of the MPW-1

internal DS1 ports.

• Connection of management traffic, to enable inband management via a

selected timeslot.

As mentioned above, when using the DS1 cross-connect mode, the whole group

of timeslots intended for the corresponding DS1 port is handled as a single

stream. Thus, the source port must also use the DS1 cross-connect mode and the

same framing mode.

Internal DS1 Ports

The internal DS1 ports are logical ports that provide the linkage between the

packet processing subsystem and the TDM subsystem:

• On the TDM side, a DS1 port serves as an endpoint for traffic from the TDM

and signaling buses. Each I/O or PDH port in the Megaplex-4100 that will use

pseudowires on MPW-1 must be assigned bandwidth (timeslots) on the

internal DS1 port, using the standard Megaplex-4100 timeslot assignment

procedures.

• On the pseudowire side, a DS1 port serves as the collection point for

timeslots to be carried by each pseudowire. Thus, to carry traffic from a

specific TDM port by means of a pseudowire, it is necessary to assign the

same timeslots on the TDM side and on the pseudowire side. The pseudowire

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 107 108

Comments to this Manuals

No comments

RAD Data comm MPW-1 Specifications Page 22

Comments to this Manuals

Related products and manuals for Gateways/controllers RAD Data comm MPW-1