Голосовой интерфейсный модуль 2/4-проводный E&M

Number of ports       8 x 2-/4-wire voice channels to PBUS according ITU-T G.712 - G.715
Coding                                    A-law according ITU-T G.711 Input (from exchange)     - 
16.0 ... + 9.5 dBr, programmable Output (to exchange)              - 20.0 ... + 7.0 dBr, 
programmable
Nominal impedance                   600 Ω
Channel bandwidth                   300 ... 3400 Hz
Signalling                                      E, M, E’, M’
Support of Signalling types I to V
Traffic protection                   1+1 path protection, shared protection ring
Features                              8 x voice or data conferences with up to 32 participants
Point-point, point-multipoint and multipoint-multipoint topologies