CISCO MPSM-T3E3-155, BA3CMLEFAB, 800-23005-08, 73-8597-09 MGX 8850 MULTI-PROTOCOL SRV MOD ROHS MPSM 1-PORT OC3/STM1 OR 3-PORT T3/E MPSM-T3E3-155 The Cisco 1-Port OC-3/STM-1 or 3-Port T3/E3 Multiprotocol Service Module (MPSM-T3E3-155) is a single-height service module for the Cisco MGX 8850/B and the Cisco MGX 8830/B Advanced ATM Multiservice Switches. The Cisco Multiprotocol Service Module delivers connectivity from DS-0 to OC-3 speeds and provides Any Service, Any Port (ASAP) capability. ASAP allows service providers to provision both Frame Relay and ATM services on any port in the service module, allowing for reduced capital and operating expenditures.