CCIT Transmission Devices PCM 30 Channel Phone PSTN Pots Voice Over Fiber Pcm Multiplexer

Specifications

   Volume Modular Voice Optical Transmission Device PCM Equiment

2 Features

 l High-density single-board design, improved system reliability, easy installing & commissioning, maintenance free and stable performance.

 l Fiber interface provides optical circuit E-3 and E-6 bit error warning detection, indicating circuit quality for builders and helping circuit maintenance.

 l The system can provide maximally 192-line telephone interface and adopts the traditional PSTN voice, with 16 lines as a module occupying a channel of 64K, uncompressed, with high voice quality. Caller ID function available.

 l Voice Card can display the indication of the connection between the display card and optical transmission card and the status of the peer-end voice card connection. At the same time, the voice card provides 1 line voice picking-up display function to facilitate the provisioning of voice channel.

 l E1 function card provides users with one-way of transparent E1 data passage and the resistance of 75Ω/120Ω can be set by DIP switch

 l 2way Ethernet interface with 100M bandwidth. Optional 10M/half duplex, 10M/full duplex, 100M/half duplex, 100M/full duplex and self adaptive. VLAN supported. VLAN isolation of the 2-line Ethernet interface under user settings.

 l Peer-to-peer networking mode, FXO/FXS mode supported. Fixed the telephone transmission problems of marginal customers.

 l 1.9 inches structure with 4U height supported, and lower machine room occupancy; the modular insert structure of voice makes the expansion of system easier. 

                                                                     Front Panel Introduction of Mainframe

2.Function Card Rear Panel on Mainframe:

2.1Ethernet Interface

      There are 2 RJ45 ports, providing 3 Ethernet interfaces (100M bandwidth shared) and these two Ethernets are a shared exchanger, which can transmit on optical fiber simultaneously. The Ethernet interface supports automatic recognition/adaptation of cross-wires and direct-type-wires, ridding the trouble of remaking the wires

2.2VOICE Interface

        It provides a DB37 physical interface up to 16 lines of voice.

2.3 E1 Interface

  1-way E1 channel is provided by selecting a resistance of 75Ω or 120Ω75Ω by DIP switch

 2 Q9 interfaces;120Ω resistance: 1 RJ45 interface.

   Chapter Three Introduction to Centralized Frame

   3.1 Frame Front Panel Descriptioz

 Note: There are 15 slots on the frame totally, two of which are for power source and the rest 13 slots are for voice function cards and optical fiber transmission cards.

 3.1.Optical Fiber Transmission Card

In order to facilitate the maintenance and installation, the optical fiber transmission card is fixed on the 0th slot and only one optical fiber transmission card can be configured on one frame. Each optical fiber transmission card can provide one-way optical transmission port and two-way Ethernet interfaces sharing 100M bandwidth.

 3.2 Voice Function Card

One frame can be inserted with up to 12 voice function card, corresponding to Slot “1~12”; each voice card can provide 16 lines of voice with 192 line voice interfaces maximally when it is fully inserted. Classified by the using status, there are two types of voice cards available: FXO and FXS.

 3.3 E1 Function Card

One frame can be inserted with up to 12 E1 function cards, corresponding to Slot “1~12”; each E1 function card can provide 1-way transparent 2M interface.

 3.4 Power Card

 The user can insert power card into the frame according to actual configuration. 

  There are two types of power cards: 220V and –48V, with two powers consumption of 200W and 300W (optional), and hot stand-by capability.

 4. Description of Frame Rear Panel

Technical Specifications

 4.1 Operating Environment

The device has a wide range of operating temperature and is able to work normally and stably in highly adverse environment.

Operating Temperature:  0°C ~ +70°C

Storage Temperature:   -40°C ~ +70°C

Relative Humidity:     10 %~95 %

Atmospheric Pressure:  70~106 kpa

The environment should be free of corrosive and solvent gases, dust, and magnetic interference.

4.2 Power Supply

Using high-quality power adaptor, the device has a wide fluctuation tolerance, strong anti-interference and isolation quality to ensure a stable operation.

Input Voltage      AC 220V / DC-48V

Power Fluctuation   165VAC~265VAC or-36VDC~-72VDC

Power Consumption

4.3 Mechanical Specifications

Dimension: Width483mm×Height178mm×Depth257mm

4.4 Optical Interface

Wavelength:  850, 1310 and 1550nm optional

Mean Transmit Power: ≥-8dBm(single mode, 1310)

≥-18dBm(multimode, 850)

                   ≥-25dBm(multimode, 1310)

Connector Type: FC/SC optional; single mode/multimode optional; single-strand/dual-strand optional.

4.5 Ethernet Interface

Ethernet Interface Rate: 10M/100M adaptive, 10M half-duplex, 10M full-duplex, 100M half-duplex or 100M full-duplex optional

Compatible Portocol: IEEE802.3

Transmission Rate: 100M

4.6 FXO (FXS) Telephone Interface

Line Property: Comply with the Technical specifications for telephone exchange equipment by Ministry of Posts and Telecommunications

Voice encoding: PCM encoding, 64Kbps per line

Relay Interface (FXO): Connected to switch

Second-tier AC input impedance: 200 +680 / / 0.1 Ω (three components)

Ringing voltage: 35 ~ 150 V

Ringing frequency: 17 ~ 60 HZ

Return Loss: 20 db

User Interface (FXS): connect users’ telephone

Second-tier AC input impedance: 200 +680 / / 0.1 Ω (three components)

Loop Resistance of Subscriber Line: less than 1 K Ω (including the phone)

Ringing voltage-peak: 110 ~ 150V

Ringing frequency: 22 ~ 28HZ

Feed voltage: 28 V

Return Loss: 20 db

4.7 E1 Interface Criteria

Electrical Performance: compatible with ITU-T G.703

Transfer Performance: compatible with ITU-T G. 823

Jitter Performance: compatible with ITU-T G. 823

Rate: Transmission port 2048Mbps±50ppm

Code Type: HDB3

Interface Impedance: 75Ω/120Ω

Interface Connector: Q9 (75Ω) or RJ45(120Ω)

The Integrated frame provides structure of 4U and 19 inches, and 13 service channels, which can be equipped with optical card and voice card flexibly, providing 220V or –DC48V power.

Optical fiber transmission card provides 2 Ethernet channels (sharing 100M bandwidth) and bears the transmission of 192 channels of voice on optical fiber channel

Voice card, each can provide 16 FXO voice ports