The Nokia 7705 Service Aggregation Router (SAR) Optical Add-Drop Multiplexer adapter cards and modules are an ideal solution for network operators with access to fiber facilities who are seeking to increase the value and efficiency of their optical infrastructure by adding CWDM capability.The Nokia 7705 SAR OADM adapter cards are supported on the 7705 SAR-8 and the 7705 SAR-18 platforms, and the OADM modules are supported on the 7705 SAR-M. All these passive optical devices support in-service insertion and removal, and are temperature hardened.The ability to add and drop, and to multiplex and de-multiplex wavelengths in a 7705 SAR network, brings opportunities for capacity increase without adding undue complexity or cost.