The main features of the Cisco 8-Port OC-12/STM-4 Channelized/Unchannelized ATM Switch Service Module are listed here.

Full nonblocking, full-duplex line-rate throughput on all 8 ports when used on the Cisco MGX 8950 chassis

Up to 4 ports with nonblocking, full-duplex line-rate throughput when used on the Cisco MGX 8800 chassis

Individual port channelization down to DS-3 and OC-3c/STM-1

Per-virtual-path and per-virtual-circuit traffic shaping and available bit rate (ABR) with virtual source and virtual destination

APS (1:1 and 1+1) port redundancy, plus APS 1+1 card redundancy

Up to 4 million cell buffers

Up to 16 classes of service (CoS) that can be used to support IP or ATM services

Support for standards-based Private Network-to-Network Interface (PNNI), switched virtual circuit (SVC) and switched virtual path (SVP), 

soft permanent virtual connection (SPVC) and soft permanent virtual path (SPVP), and Multiprotocol Label Switching (MPLS) services

Cisco MGX 8800/8900 Software Release 5.2.00 and above for Cisco MGX 8830/B, MGX 8850, MGX 8850/B, and MGX 8950

Cisco MGX 8800/8900 Software Release 5.3.00 and above for Cisco MGX 8880

Managed by Cisco WAN Manager software suite

Based on Simple Network Management Protocol (SNMP)

Input power required: -48 VDC

Power consumption: 134W