Alcatel Lucent 1660SM Optical Transmission System Architecture and Business Bearer

Integrated Coarse Wavelength Division Multiplexing (CWDM)

1660SM directly integrates CWDM function, enabling multi wavelength transmission without the need for external devices:

STM-16 color port: compliant with ITU-T G.694.2 grid (1470~1610nm, 8 wavelengths), wavelength selected through SFP transceiver;

OADM module: 1-channel or 2-channel add/drop multiplexing;

8-channel AUX/DEMUX module: full grid add/drop;

Dual multi rate repeater: supports black/white ↔ Color conversion and color ↔ Color reproduction, client signals support FDDI, Fast Ethernet, STM-1/4/16, ESCON, Fiber Channel, GigE, 2xGigE, STM-16 with FEC, etc;

4 × ANY board: Reuse up to 4 customer signals (Fast Ethernet, FDDI, ESCON, Digital Video, Fiber Channel, FICON, GigE) into a single 2.5Gb/s optical channel (server signal).

Auxiliary expenses and network management

1660SM fully supports the management of SDH segment overhead and channel overhead bytes (see Table 3-6 for details), including A1/A2, J0, B1, E1, D1-D3 for RSOH, B2, K1/K2, D4-D12, S1 (SSM), M1, E2 for MSOH, as well as J1, B3, C2, G1, F2/F3, H4 for VC4/VC3, and V5, J2 for VC12.

In addition, provide:

TCM (serial connection monitoring) capability, supporting monitoring within the operator's domain;

4 x V.11, 4 x RS-232, 4 x G.703 (64kb/s), 2 x G.703 (2Mb/s) auxiliary terminals;

Support optical amplifier (enhanced type, 2 slot width) MUX/DEMUX、OADM。

Overview of Network Protection Mechanisms

Characteristics of Applicable Scenarios for Protection Types

Linear MSP point-to-point link 1+1/1: N, single ended or double ended

MS-SPRing STM-16/64 ring network, 2 fiber bidirectional, up to 2 rings (STM-64 level)

SNCP/I (intrinsic) any topology subnet connection protection, all VC levels

SNCP/N (non-invasive) interference free monitoring and protection for any topology

Equipment redundancy node level matrix 1+1, EC redundancy, power distribution redundancy