| Marketing Information | E&M module provide a quick and simple upgrade path for TSU multiplexers requiring support for PBX's, KSU's, analog telephones, dial-up modem pools, fax machines and leased line modems.
Applications involving 2- or 4-wire E&M tie lines are supported in the TSU multiplexer with the E&M module. In addition to supporting Type I, II and V E&M signalling, the E&M module support legacy leased line modems in Transmit Only (TO) mode. Each dual port plug-in module supports the 2713Hz loop back tone.
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