Designed for receiving and transmission of line signals of digital PBX over one or two E1 links, processing in accordance with V5 interface protocols and channel terminations control.
AP-01 board
Designed for matching K-128 unit with subscriber ISDN modem via two-wires U-interface, contains four ISDN ports with basic access 2B+D.
AP-02 board
Designed for matching K-128 unit with subscriber ISDN modem via two-wires U-interface, contains two ISDN ports with basic access 2B+D.
AK-04 board
Designed for matching K-128 unit with telephone sets, contains eight analog PSTN ports.
IP-06 board
Designed for local power supply from DC voltage source with nominal 48 or 60 V.
IP-05, SN-03 boards
Jointly provide local power supply from mains 220 V.
K-128 cassette
Designed for installation of GS-02 system board, power supply Ip-06 (or IP-05 with SN-03) boards and subscriber interface boards, up to 16 pcs.
