The Cisco MRP3-8FXOM1 card is a high-density Foreign Exchange Office (FXO) M1 gateway card built from industry-proven Cisco hardware and Cisco IOS Software technology. The card offers eight integrated FXO M1 ports along with one modular voice interface card/WAN interface card (VIC/WIC) slot. Each FXO M1 port offers caller ID support and battery reversal detection support if trunks are equipped with this capability from the public switched telephone network (PSTN). This card provides you with the FXO density you need along with the flexibility to support other voice and data interfaces that are required for business communication within your offices.The Cisco MRP3-8FXOM1 card is built on the same proven voice-over-IP (VoIP) technology used in Cisco 1700, 2600, and 3600 Series multiservice routers to ensure end-to-end interoperability between IP and time-division multiplexing (TDM) endpoints. The Cisco MRP3-8FXOM1 card contains onboard Flash memory for storing Cisco IOS Software images locally on the card, letting you configure a unique voice and data feature image for each MRP card in the Cisco ICS 7750 system. This card also enables you to take advantage of all existing Cisco VoIP services and voice-compression formats to meet your voice quality and data bandwidth transmission requirements.The Cisco MRP3-8FXOM1 card has one modular slot that accepts existing Cisco VICs and WICs. This slot provides the same VIC and WIC support available on the Cisco 1750, 1751, 2600, and 3600 routers, allowing you to build upon current Cisco networks while maintaining interoperability and consistent end-to-end service between locations. This is particularly important when networking an enterprise branch office throughout a distributed enterprise network.