Alcatel-Lucent 9500 MXC, Руководство пользователя

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Chapter 3. 9500 MXC Nodes
Vol. II-3-68 Alcatel-Lucent
• Auxiliary Applications
• Auxiliary Data and NMS Functions
• Installation and Operation
Auxiliary Applications
Intended applications are:
• Transport of 3rd party NMS (or other data) over a 9500 MXC network.
• Transport of 9500 MXC NMS over a 3rd party network to a remote 9500 MXC
node or network.
Auxiliary Data and NMS Functions
Two data function options are provided on a per-port basis, Data and NMS:
Data Option
Customer auxiliary data is transported within one of up to six discrete 64 Kbps
link overhead ports (channels) on each link (RAC or DAC 155oM).
Data type can be configured for asynchronous V.24/RS-232, or synchronous
V.11/RS-422.
The channels share the same overhead as the NMS and INU-INU internal
communication.
At intermediate sites, each channel must be re-directed to the next RAC, or DAC
155oM. (An AUX is not required at intermediate sites).
At the destination site, each channel is directed to the required port on the AUX
plug-in.
NMS OPtion
9500 MXC NMS is provided for transport over a 3rd party network to a remote
9500 MXC node/network, where it must be ported back in via an AUX.
The data type is default configured for synchronous V.11/RS-422, 64 kbps.
Installation and Operation
For a RAC 30V3, RAC 3X or RAC 40, the maximum radio link overhead
capacity is 512 kbps, of which a
minimum 128 kbps is required for NMS
transport. This leaves a maximum 384 kbps (6x 64 kbps) available for auxiliary
data transport.
Each end of the link auto-negotiates on the link overhead to assign the maximum
available capacity to NMS. When no auxiliary traffic is present, the full overhead
is assigned to NMS; when one channel is used 448 kbps is assigned to NMS; for
two channels 384 kbps is assigned to NMS, and so on to a minimum 128 kbps.