SNMP agent that runs on the NP of a LightStream 2020 ATM switch. MMA translates between an external network manager using SNMP and the internal switch management mechanisms. Device that converts digital and analog signals. At the source, a modem converts digital signals to a form suitable for transmission over analog communication facilities. At the destination, the analog signals are returned to their digital form.
Modems allow data to be transmitted over voice-grade telephone lines.
See also AM , FM , and PAM . MOP Maintenance Operation Protocol . Digital Equipment Corporation protocol, a subset of which is supported by Cisco, that provides a way to perform primitive maintenance operations on DECnet systems. For example, MOP can be used to download a system image to a diskless station. See also WWW browser .