PCM120 is one module, designed for large volume, with multi-E1 ports. 1&16 sets of MUX card can be plugged. With 16 MUX, PCM120 works as a completely cross-connect equipment. Usually , we use 1&2 MUX for 4&8 E1 ports. PCM120 distributes signals to multiple E1 directions. With high density as well as high reliability, PCM120 can transfer 210 loops two-channel analytic audio signal at its maximal rate. Plugin board is hot swapped. With LED alarm, each board is supervised conviniently. PCM120 works smoothly with other module of PCM.
With the NM software, E1 adopts 1+1 protection. It will switch automatically to another E1, when meets problems.
PCM 120 contains 18 card slots. Both side card slots are power plugin. Commonly, one MUX board is needed, or 1+1 for protection, which lieds the 9th/10th card slot. The other 14 slots are for the service card, such as 2 wire voice channel, 2/4 E&M channel, V.11/V.24 channel. According to the amount of MUX board, PCM120 multiplexes 4-8 E1 to transfer.
| Module | Introduction |
|---|---|
| ZN787 | -48V DC power supply card, ring module integrated |
| MUX120 | 4E1 MUX card, 4 channels V.24 extensible |
| ZN751An | FXS, 5/6/10 channels optional, 4ST-BUS |
| ZN752An | FXO, 5/6/10 channels optional, 4ST-BUS |
| ZN756An | 2/4 E&M, 5/6/10 channles optional, 4ST-BUS |
| ZN747An | V.11/V.24 data card, 5/6 channels optional, 4ST-BUS |
Frame Parameter
The framework of PCM120 is steel. 19inch external width, 6U height, 30cm length.
This equipment can be screwed through mounting hole to 19 inch cabinet.
Port Physical Parameter
| Name | Description |
|---|---|
| E1 port | BNC coaxial connector |
| extension card port | X100 socket(64 pins) per card |
| NM port | DB9(socket) |
Port Electrical Parameter
Technical features of PCM120 meets ITU-T G.703、G.711、G.712、G.713、G.714、G.732.
System FeaturesTransmission technique: PCMGroup Interface: E1Gross bit rate: 2.048Mbit/s±50ppmSampling Frequency: 8KHzFrame Time Slot Amount: 32Channel Amount: 30Bit Rate of Time Slot: 64Kbit/sSignalling Signal: TS16
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2Mbit/s Interface(E1)Transmission Type: HDB3Transmission Rate: 2048Kbit/sPermissible Deviation: ±5×10E-5Impedance at E1 Interface: 75Ω/120ΩE1 Signal Amplitude: 2.37V/3V |
FXSCapacity: 5/6/10Standard Referred to: ITU-T\REC\Q.522Frequency Range: 0.3-3.4KHzIdle Channel Noise: < -65dBm0Cross Talk: < -65dBm0Relative Level Transmitted at F2an:
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FXOCapacity: 5/6/10Standard Referred to: ITU-T\REC\Q.522Frequency Range: 0.3∼3.4KHzIdle Channel Noise: < -65dBm0Cross Talk: < -65dBm0Relative Level F2an: 0dBrRelatvie Level F2ab: -3dBrLoop Resistance: 470ΩAudio Impedance: compoundRing Current Detection Level:35V∼100VReceive Ringing Frequency: 16Hz∼66Hz |
2/4 wire E&MCapacity: 5/6/10Standard Referred to: ITU-T\REC\G.714Signaling Mode: E&MAudio Impedance: 600ΩTransmission Relative Level at F2in:
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Power Supply and Operation EnvironmentInput Voltage Range: -36V∼72V DCMaximum Output Power: < 20WPerformance Temperature: 0℃∼+40℃Operation Temperature: -10℃∼+45℃Storage Temperature: -40℃∼+60℃Performance Humidity: 10%∼90%(+35℃)Operation Humidity: 5%∼95%(+35℃) |
Data Interface CardCapacity: 5/6Asynchronous Data Channel V.24/RS232Logic Level: 0=+10V,1=-10VTransmission Rate: 0-19.2kbit/sSampling Rate: 64KHzInterface Static Protection: AvailableInterface Protection Voltage: ±10VAsynchronous V.11/RS422/485Signal Line Amount: 4Input Detection Capability:
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Point to Point
One to Multipoint Mode
Ring Mode
PCM
PCM120
- Conspectus
- Components
- Interfaces
- Characteristics
- Networking Mode