Along with the constant development of society, and universal telephone subscribers continued to increase,  telephone transmitter sometimes have little capacity to meet "the needs of users School Official Cites Use of large capacity can not, Therefore, I introduced the company targeted only one pair of optical transmission routes 60, 90 channel to 720 or more routes phones transmitter.
Basic configuration and features
Telephone optical transceiver(host) must allocation
◆ Provide one line with the rate of 10/100M Ethernet interface(JMP).
◆ provide 3-23 E1 interface(JMP).
◆ Power：< 15W/system
◆ Working environment ：0℃～40℃
◆ Relative humidity ：≤90%（25℃)
◆ Allow voltage fluctuation：-36V～-72V
◆ On adapt to a variety of environmental -48VDC or 220VAC power supply. Telephone optical transcal
Telephone extension machine JMB
◆ Provide 30-channel telephone interface.
◆ On telephone for the RJ45 interface (RJ11 can head into the crystal).
◆ Speech Interface support CND and anti- Signals.
◆ On small size, looks beautiful, easy installation and operation.
◆ On improving the status display, easy maintenance and management.
◆ Standard 19-inch 1U structure. Telephone extension machine
| Telephone Configuration |
| Model Name |
Tel approach |
Allocation of Networking |
| YKD01-60 Telephone optical transceiver |
60-channel telephone |
Telephone optical transceiver+2 telephone extension machine |
| YKD01-90 Telephone optical transceiver |
90-channel telephone |
Telephone optical transceiver+3 telephone extension machine |
| YKD01-120 Telephone optical transceiver |
120-channel telephone |
Telephone optical transceiver+4 telephone extension machine |
| YKD01-240 Telephone optical transceiver |
240-channel telephone |
Telephone optical transceiver+8 telephone extension machine |
| YKD01-720 Telephone optical transceiver |
720-channel telephone |
Telephone optical transceiver+24 telephone extension machine |
|
| Networking Application |
|
| Main Technical Indexes
|
Optical Interface
a)Bit rate：155.52Mbps±20ppm
b)Code pattern : NRZ+ Scramble
c)transmission optical power：> -5dB ～ -17dB
d)Receiver sensitivity：> -36dB
E1 Interface
Nominal E1 Interface，Conform to ITU-T G.703、 G.704 suggestion
a) Bit rate：2048Kbps±50ppm
b) Code pattern ：HDB3
c) Interface impedance ：75Ω
d) Interface Characteristics： Conform to G.703、G.742and G.823 standard
e) Frame Structure ：no frame structure
Ethernet Interface
a) Interface：10/100Base-Tx；
b) Interface specification： conform to IEEE- 802.3u standard
c) Interface rate: 10/100M self-adapting
d) Interface connector ：RJ-45.
|
|
User and interface loop
Speech Interface : speech characteristics with the<<Ministry of Posts and total telephone exchange switch equipment Technology Standards>>
a) Impedance：600Ω
b) Insertion loss：-3±0.75dB
c) Frequency：300～3400Hz(-0.6～+3dB)
d) Noise：≤63.7dBmop
e) crosstalk attenuation：≥65dB
f) Subscriber Line loop resistance of less than 3K Ω (walkie-talkie)
g) Feed voltage：48V；
h) Feed current：20~50mA；
i) 15V ringing： plus or minus 15V AC90
V.24 Interface (RS232)
a) Interface pattern ：V.24
b) rate：0–19.2Kbps
Power supply
220V or -48V |
|
