Central telefonica Ericsson Business Phone 250

Central telefónica Ericsson Business Phone 250 em excelente estado. Esteve a funcionar até Abril de 2021, tendo sido substituída por um call manager Cisco. A central possui as seguintes placas: CPU-D4 Central Processor Unit ELU-D3 32 port digital extension card MFU Multi Frequency transceiver, for in-band register signalling. ELU-A (8) is a 16-port analogue extension card BTU-D 30 channel ISDN PRI card BTU-A analog trunk card with 8 channels Descrição da placa CPU-D4 Central Processor Unit: • Central Processor • Program and data memory • Conference unit • Switch • Real-time clock • One V.24 port for local operation and maintenance • Two V.24 ports that can be used for other purposes such as CIL or Hotel Computer connections • One configurable RS 485 long range port • V.32bis modem for remote maintenance • Connection of temperature sensors • FECU connection • Audio port for music-on-hold. • Data buffer for 500 call-information logging records in case of V.24 connection failures. • Extension line boards