Interconnecting OSCM and OSFM Modules
312
Installation and Commissioning Manual
F
S
P
3000R
7 R
11
.1 8000
0015930
Issue
B
, ©
2012
ADVA AG Optical Netw
orking
ADVA Conf
idential
Interconnecting OSCM and OSFM Modules
This section describes how to establish optical connections between OSCMs
and OSFMs.
The following subsections are covered:
“Optical Fiber Connections” on p. 312
“Fiber-Optic Cable Jumpers” on p. 312
“Interconnecting 2OSCM-V#1630 or OSCM-V#1630 Modules in a Dual-Fiber
OSC Ring” on p. 312
Optical Fiber Connections
The interconnection requirements are determined by the network topology and
the location of the OSCM and OSFM modules within the network element. Inde-
pendently of the network topology, the OSCM optical Ethernet ports are con-
nected West to West (NW to NW), East to East (NE to NE) and East to West
(NE to NW) or West to East (NW to NE).
For details on the OSC concept refer to the
Detailed System Description
.
Fiber-Optic Cable Jumpers
If the fiber jumper cables are not delivered with the equipment, you must build
your own fiber jumpers. Use single-mode fibers (SM 9/125 µm) according to
ITU-T G.652 with LC connector plugs on each end of the cable jumpers. Pay
attention to the proper fiber jumper lengths.
Interconnecting 2OSCM-V#1630 or
OSCM-V#1630
Modules in a Dual-Fiber OSC Ring
Each NE in the ring must be equipped with a 2OSCM-V#1630 or two
OSCM-V#1630 modules (to provide two different OSC terminations, one for the
west side and another for the east side).
shows an example
of how two typical NEs of a simple dual-fiber OSC ring configuration can be con-
nected to each other. For ease of representation, all optical modules, manage-
ment modules, etc. in the NE have been omitted. In the diagram below, the
network interface West (NW) of the 2OSCM-V#1630 in NE A is connected to the
network interface East (NE) of the 2OSCM-V#1630 in NE B so that the OSC sig-
nal is redundantly transmitted in both “West to East” and "East to West" direc-
tions. At least three NEs must be connected to form a ring topology.
Actual fiber connections will vary depending on how each NE is configured.
Refer to your installation and cabling plan for details.
P
S
Note
To enable Ring Group Switching (RGS) and Topology Detection
Protocol (TDP), OSCM modules must always be interconnected by
East to West or West to East connections.