Model Number

HDPG16(COT+RT)

HDPG16 Digital Pair Gain System


General description

Digital pair gain system is a kind of next generation digital pair gain system developed by Zhuzhou Julong Sci-tech Co., Ltd The lasted G.SHDSL transmission technology at present is applied to its digital connector. It can serve 8��2��16 or 20 subscribers through a pair of twisted wires. Compared to other multiplication equipment of the same model, it has more router numbers and longer transmission distance. Metal matrix is adopted in its analog connector to insure that signals like voice and data are completely transparently transmitted between exchanges and subscriber.

This equipment, integrating all the advantages of old digital or analog circuit multiplication equipments, provides digital and analog connectors in one set of equipment and is applicable to lines of different distances.

This equipment, delicately designed, is divided into to types. One type is of 6U 19 inches big case which can provide maximum 220 lines for subscribers (1 peer (COT) to n peers), the other type is of 1U 19 small case which can provide 8��2��6��0 lines for dispersive subscribers (peer (COT) to peer). Net management function is added on 6U big case , which it is very convenient for users conduct remote maintenance and management. The RT of this equipment is outdoor, independent, maintenance-free module for 8��2��6��0 subscribers, which is enveloped in a sealed and all-weather plastic case. It features small size, small weight, easy installation, diverse installation methods, interchangeability, which greatly facilitate its operation.


Main Features
��Economic, fast number allocation, convenient phone displacement, recyclable.
��Convenient remote maintenance and management with the help of net management function
��Dynamically meet the needs ranging from 8 subscribers at the least to 220 subscribers at the most.
��Specially designed RT cases suitable for peer-to-peer or peer-to- n peers installation.
��Remote power supply
��Caller display function
��Reversal polarity signal

Analog connector can provide all the existing digital services

Application
��Multiplication of phone cable
��Temporary emergent telecommunication
��Rural, urban small subscriber groups
��Public phone bars

Main technical parameters

�� Number of subscribers 16 subscribers (digital unit can be 8, 12, or 20 subscribers while analog unit can be 20 subscribers)

�� Trunk line: Digital unit 1 line, analog unit 5 line (among which, 1 is digital/ power supply line)

�� worksite environment竊�
Central Office Terminal: humidity< 85竊� temperature -10°C竊�5°C
Remote Terminal: humidity< 95竊� temperature -20°C竊�0°C

�� Size
Central Office Terminal:6U case: 483mm?48mm?67mm竊�??竊�
Local Terminal: 1U case: 483mm?38mm?5mm竊�??竊�
RT: Φ170mm?95mm

��Service distance
Analog connector
Wire gauge distance
Φ0.4mm 6Km
Φ0.5mm 10Km
Digital connector
Wire gauge distance
Φ0.5mm 7Km
Φ0.4mm 5Km
�� In-plug loss 1.5±1dB

��Trunk features
Trunk line loop current<100mA
Circuit code TC-PAM
Bit rate 264kbps-1288kbps
Trunk resistance 135Ω

��Features of audio connector(COT)
Power -36VDC竊�72VDC
Resistance of audio channel 600Ω/900Ω

�� RT audio subscriber connector:竊�
Power supply 260V DC supplied by COT line
Wire resistance: 600Ω
Loop resistance 700Ω (including telephone sets)
Loop current ≥20mA
Onhook DC voltage >40VDC

�� Equipments to serve: phones, public phones, modems, Fax and PABX