8 ports FXO/FXS over fiber PCM Multiplexer
8 ports FXO/FXS over fiber PCM Multiplexer
8 ports 2-wire 4-wire E&M over fiber PCM Multiplexer
8 ports voice PCM multiplexer
8 ports FXO/FXS over fiber PCM Multiplexer
8 ports 2-wire 4-wire E&M over fiber PCM Multiplexer
8 ports voice PCM multiplexer