3com Router 4-Port E&M MIM wired router

Router 4-Port E&M MIM Maximize Performance with Optional Interface Modules
These Multi-function Interface Modules (MIMs) provide a variety of expansion options that let you enhance router performance to optimize network operation. Customize your network to your business needs.
4 E&M ports provide PABX connections
Backward compatibility with existing Multifunction Interface Modules (MIMs) enhances investment protection and provides maximum configuration flexibility
Support for industry standards such as Session Internet Protocol (SIP)—which integrates data, voice and video in a single call—maximizes interoperability and protects your network infrastructure investment from obsolescence
VoIP support enables enterprises to bypass toll calls, decreasing telecommunications expenses by an industry-accepted average of 25% to 60% annually
MIMs enable scalable and secure network operation
MIMs maximize interface density and slot efficiency