BY-2000 Telephone exchange
——digital type
Function and feature:
1.Suply standard voice and voice change functions
2. PC connect Port directly
3.Print phone bill in Chinese and English
4. Be Compatible with all kinds of exchanger
5.User can program
6.Support the bill function of calling phone and deeper and so on
7.Interrior lines or exterior lines secondary dial
8.Expending the content for the custom's request
9.Support the pre-paid function of hotels and enterprises and so on
Performance Indicators：
Brief introduction of capacity：
1.Interior lines capacity：16 gateways（port）——1024 gateways（port），8 gateways or 4 port as a unit
2.exterior lines capacity：8——128 lines（port），8（4） port as a unit increment。
3.Port type：
1）Ordinary user port：A、B line 48V Feed，8 gateways（port）as a unit increment（users can match the calling number display module）
2）Digital user port：2B+D port S/T or U structure，open 2 B channels per port at the same time，users can connect 8 digital telephones or other terminal equipment，4 ports as a unit increment。
3）Loop relay：incoming ring down，exhaling direct current or DTMF。8 gateways（port）as a unit increment（users can match the calling number display module）。
4）E&M relay：2 lines or 4 lines E&M，DTMF or MFC mode，4 ports as a unit increment。
5）Digital relay：30/32 slot，Standard bit rate:2.048MB/S,code:DHB3，750 Ω unbalance output or 120 Ω balance output。
6）IDSN relay：2B+D interface U structure。
7）Voice box：1-8，add 1 per 128 gateways。
4.Interface Configuration：
1）2 computer serial ports ，connecting with 2 computers which are installed above WINDOWS95 operation system version at the same time（Computer Vice-port is also used to connect the telephone platform and other intelligent platforms)。
2）A parallel printer output，connecting with 24-pin printer directly（LQ-850、KX-P1121 and so on）。
3）1 headset interface （2 line type）
Operating Guide：
Details in the instruction！
Accessories：
1.Out line plug：1 below 40 gateways，2 above 40 gateways
2.User line：1 per 8gateways
3.Print line ：1
4.Power cord：1
5.Instruction : 1
