YKDH16J is the centralized PCM equipment, with multi-card equipment and multi-service interface tray inserting in the same frame, independently researched and developed by our company with independent development special integrated circuit. This equipment is the card type structure, standard 19-inch chassis and 4U height, and provides 17 slots and 2 dual power supply redundant backup slots;
YKDH16J provides the network management of Ethernet mode and special software, and has strong network management function that can implement the multiple monitoring and management, such as “system management”, “network management”, “and configuration management”, “alarm management”, “maintenance management” and “security management”. It can easily realize the interface configuration, phase configuration and other information of all local & remote-terminal equipments in the network management, and implement the loopback, restoration and upgrade of all directions of each interface; the network management interface shows the status of local & remote-terminal equipment at any time, and can easily result the alarm information of equipment; the network management system can record the historic alarm information of equipment in the background, and can easily consult the historic alarm content, time and other information appearing in the equipment through the historic alarm, which is convenient for maintainers to implement the removal of failure; in addition, our network management system still adds the human-based voice alarm function; when the failure generates, the system automatically makes voice and reports the information causing failure. The network management system that is always considerate for you is sure to make you find everything you need.
Network Program
Integrated PCM point to multi-point scheme drawing
Main Characteristics：
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Adopt large-scale integrated chip, simple circuit, low power dissipation and high reliability;
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Provide 17 slots, 1 network management tray slot and 16 service slots at most;
- Provide 2 power supply slots, which support the dual backup of power supply;
- Dual power supply not only provides 2-channel AC 220V power supply backup and 2-channel DC -48V power supply backup but also one-way AC & one-channel DC power supply backup;
- Mixed insertion of plugboard, various service plugboard: V.35, V.24, RS232, FXO, FXS, E/M, 2M and DXC plugboard;
- Provide network management system of strong functions;
- Applied to multiple power supply environment -48VDC or 220VAC;
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Technical Parameters
E1 interface
Interface rate: 2048Kbps, tolerance±50ppm;
Interface code pattern ：HDB3；
Interface impedance: 75Ω (imbalance)
Electrical characteristics of digital interface: conform to ITU-TG703 suggestion
Jitter transfer characteristics：conform to ITU—TG.823 suggestion；
Input jitter tolerance ：conform to ITU—TG.823 suggestion；
Output jitter ：conform to ITU—TG.823 suggestion；
Level ：±2.37V±10%；
Interface connector: DB37 equipped with DB37-BNC switching cable;
100M Ethernet interface
Interface ：10/100Base-Tx；
Interface specification: conform to IEEE-802.3u standard
Interface rate: 100M
Adaptive pattern ： 10/100M self-adapting
Interface type ：RJ-45；
N×64K Ethernet interface
Interface：10/100Base-T；
Interface specification: conform to IEEE-802.3u standard
Interface rate：N×64Kbit/s；
Adaptive pattern：10/100M self-adapting；
Interface type：RJ-45；
Applicable card: YKDH8E Ethernet service plugboard
Network management interface
Interface ：10Base-T；
Interface specification: conform to IEEE-802.3u standard
Interface type：RJ-45；
Based on protocol ：TCP/IP；
RS232 interface
Interface rate： ≤19200bit/s
Interface level：RS232 level；
Distributed work：DCE；
Interface type：RJ-45；
Applicable card: it is applied to various optical transmission equipment card and YKDH16RS RS232 service interface card;
V.35 interface
Interface rate：2048Kbit/s；
Distributed work：DCE；
Interface type：DB37（ simultaneously equipped with one converter cable of DB37—M34 standard ）；
Applicable card ：YKDH8V V.35 service interface card ；
V.24 interface
Interface rate：N×64Kbit/s(N=1、2)
Distributed work：DCE；
Interface type：DB37（ simultaneously equipped with one converter cable of DB37—M25 standard ）；
Applicable card： YKDH8A V.24 service interface card；
Audio interface
Interface form: automatic (FXS), exchange (FXO) and E/M (2/4W)
Voice sampling frequency ：8KHz
Audio interface index ：
a. Impedance characteristics ：600Ω balance (2/4-wire)
b.level
4-wire audio input level: -5dBr Allowable deviation ±1dB
4-wire audiooutput level: -5dBrAllowable deviation ±1dB
2-wire audio dispatch level: -0dBr Allowable deviation ±1dB
2-wire audio receive level: -3dBr Allowable deviation ±1dB
c. Audio transfer point impedance echo attenuation
2-wire： bp≥12dB(300~600Hz)
bp≥15dB(600~3400Hz)
4-wire dispatch： bp≥20dB(300~3400Hz)
4-wire receive： bp≥20dB(300~3400Hz)
d.Code：A-law
e. Bit rate ：64Kbit/s
f. Maximal impedance of DC loop ：2000Ω
g. Effective transmission bandwidth ：300－3400HZ/600Ω
h. Idle channel noise ：＜－67dB
i. Ringing current voltage ：25±3Hz，75±15V
j. Net attenuation frequency characteristics: meet the demand of ITU-T suggestion
k. Idle speech channel noise: not more than -65dBm0p
l. Interchannel crosstalk: not more than -65dBm0
m. Amplitude characteristics: meet the demand of ITU-T suggestion
n. Total distortion ： meet the demand of ITU-T suggestion
Official telephone
Physical interface ：RJ-11；
Provide one-channel PCM service telephone, which can connect to the common handle telephone
Applicable card: it is applied to various optical transceiver service cards;
Power supply conditions
Voltage： AC 220V AC 180V～240V；
DC-48V DC -36V～-72V；
Power： Each card ≤5W；
All power：≤100W；
Working environmen
Working temperature ：0℃ ～ +50℃；
Storage temperature ：-40℃ ～ +70℃；
relative humidity ：5% ～ 95%；
Atmospheric pressure ：86 ～ 106Kpa；
External dimensions
19-inch standard type 483×350×180 mm
 >>>>Order Guide
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Product name |
Business |
illustration |
YKDH16J |
Frame |
Including host box, backboard and dual power supply |
YKDH16P-DC |
DC power supply card |
Power for DC power supply tray 100W |
YKDH16P-AC |
AC power supply card |
Power for AC power supply tray 100W |
YKDH16N |
Card for network management monitoring tray |
Network management card, TCP/IP protocol Ethernet interface |
YKDH3220 |
Cross board |
Responsible for break and redistribution of time slot |
YKDH16JH |
Exchange FXO plug-board |
Each board can provide 16-channel exchange FXO interface |
YKDH16HL |
Speech channel FXS plugboard |
Each board can provide 16-channel speech channel FXS interface |
YKDH16RS |
RS232 Flashboard |
Each board can provide 16-channel RS232 interface |
YKDH8A |
V.24 Flashboard |
Each board can provide 8-channel V.24 interface |
YKDH8YP |
E/M Flashboard |
Each board can provide 8-channel 2/4-wire and E/M interface |
YKDH8V |
V.35 Flashboard |
Each board can provide 8-channel V.35 interface |
YKDH8E |
Ethernet Flashboard |
Each board can provide 8-channel Ethernet interface |
YKDH16M |
2M Flashboard |
Each board can provide 8-channel E1 interface |
YKDH120CK |
4×E1+1×RS232 |
4×E1 optical transmission equipment |
3×E1+1×RS232+1×2M V.35 |
Special optical transmission equipment can intercommunicate with YKDH120C |
4×E1+1×RS232+1×2M Ethernet |
Special optical transmission equipment can intercommunicate with YKDH120C |
YKDH120DK |
8×E1+1×RS232 |
8×E1 optical transmission equipment |
YKDH120HK |
16×E1+1×RS232 |
16×E1 optical transmission equipment |
YKDH1004AK |
4×E1+100M+1×RS232 |
4×E1+100M optical transmission equipment |
YKDH1004BK |
8×E1+100M+1×RS232 |
8×E1+100M optical transmission equipment |
YKDH1004CK |
16×E1+100M+1×RS232 |
16×E1+100M optical transmission equipment |
YKDH42010K |
4×E1/4×Eth protocol converter card |
Each board provides 4-channel E1/4-channel Ethernet protocol converter |
YKDH31040K |
Three 10/100M optical fiber transceivers |
Each board provides three 10/100M optical fiber transceivers |
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