Marconi OMS 1200
Technical Product Description
221 02-ZAP 701 25/1 Rev C 2006-08-04
© Ericsson AB 2006
03PHB00004AAV-CUA
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The OMS 1200 supports the ‘Tail-end NE’ type and the ‘Island Gateway NE’ type in
these applications. A single 2Mbit/s PDH traffic signal carrying management comms
data is extracted by the Core Trib card port-32 OMS 1240 equipment) or a selected
Trib Card port-32 OMS 1260 equipment), and is selectively configured for switching
onto the Aux / Ancillary Unit (not the associated traffic LTU). A traffic processing
function of the Aux/Ancillary Unit recovers the nx64kbit/s comms data (where n = 9
providing a 576kb/s comms channel) and feeds this to/from the CCU cards
communications processor.
Different NE products, such as Ericsson’s OMS1664 range of equipment, would
usually support the main network ‘Gateway NE’ type application. However, for a single
Node-point-to-Node-point comms routing scenario, the OMS 1200 family could
operate as head-end in the operator’s main network, and tail-end in a remote’ island’
of that network.
3.7
IP Management of Third Party Co-Located Equipment
The management of SDH equipment is usually achieved using OSI protocols.
The situation can arise in networks where third party equipment uses IP protocols for
its management. This situation is very often resolved by creating a completely
separate Data Communications Network (DCN) for this IP-managed equipment.
The feature of IP tunnelling allows this IP management traffic to be carried over the
existing OSI SDH DCN.
The IP tunnelling feature is required at either side of the SDH network, firstly co-
located with the third party equipment where the connection is through the Ethernet
‘Q’ interface of the SDH element.
The second location is at the site of the IP manager of the third party equipment (or
through an IP path to that manager). The equipment at the second location can be
either another OMS 1240, OMS 1260 or a CISCO
router.
The OMS 1240 or OMS 1260 can terminate up to 10 tunnels.
Figure 3-4: IP Management of Third Party Co-Located Equipment
SDH
Network
OMS 1200
IP
DCN
OMS 1200
3
rd
Party
Equip
Ethernet
interface
3
rd
Party
Manager
IP Protocol
OSI Protocol
OMS 1200 or
CISCO Router
