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Перечень доступного оборудования
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E1HB8. Description
E1HB8 (E1R2 and 8 Hybrid Interface Board/NTB419)
The E1R2 and 8 Hybrid interface Board(E1HB8) is based on the existing interface described in ITU-T Recommendations G.704, G.703 and G.823. It covers CEPT frame format which consist of 32, 8bit timeslots, data rate at 2.048MHz. Of the 32 timeslots in a frame, 30 timeslots are defined as information channels, timeslots 1-15 and 17-31 which correspond to telephone channels 1-30.
The frame has a duration of 125usec and contains 32 time slots (TSs) of 8 slots. TS 0 is allocated to frame alignment sync. And TS 16 is allocated to the signaling channel, the other TSs are available for allocation to the B channel. CEPT frame has four signaling bits, A, B, C and D. Signaling bits for all 30 information channels are transmitted in timeslot 16 of frames 1-15. The E1HB8 supports pulse dialing, DTMF dialing, and MFC-R2 register signaling (based on ITU-T Recommendation Q.440-480).
Data & bit clock are transmitted by the NT master and extracted by TE slave. The ipLDK-60 system will be positioned as TE slave.
The PLL circuitry on the E1HB8 extracts the reference clock from the bit stream and generates the system main clock (32.768MHz) which is synchronized with digital trunk line.
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E1HB8. Pin assignment
LAN PORT
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Connector
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Pin Number
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NO
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Signal Name
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Funktion
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RJ45
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4,5,7,8
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Reserved
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1
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TX+
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Transmit Data
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2
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TX-
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Transmit Data
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3
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RX-
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Receive Data
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6
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RX+
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Receive Data
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Note::
To connect the PRI line is usually used only a pair of contacts RX and TX.
E1 PORT
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Connector
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Pin Number
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NO
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Signal Name
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RJ45
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| 1 | RX-T |
| 2 | RX-R |
| 4 | TX-R |
| 5 | TX-R |
| 3 | TX-R |
| 6 | TX-R |
| 7,8 | N/A |
RJ11 PORT
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Connector
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Pin Number
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NO
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Signal Name
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Function
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RJ11
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1
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N/A
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2
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DKT-T
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Digital system terminal
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3
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SLT-T
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Analog telephone
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4
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SLT-R
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Analog telephone
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5
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DKT-R
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Digital system terminal
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6
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N/A
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E1HB8. Various connectors functions
Connector/
Switch
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Function
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Remark
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SW1-1
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Loop Back ( OFF: off, ON: on)
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Default : off
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SW1-2
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CRC4 control (OFF: on, ON: off)
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Default : off
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SW1-3
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NT or TE mode (OFF: TE, ON: NT)
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Default : off
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SW1-4
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Wire routing switch
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Default : off
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SW3
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Reset switch
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SW4
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Switch to choose PRI or E1
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Default : on (E1HB8)
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CN1
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JTGA port for CPU emulator
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CN2
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Serial port(RS232C) for tracing of E1HB8
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CN3
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JTAG port for DSP emulator
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CN6/CN7
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Connector for SLU8
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Note:
1. Switch SW1-1 is designed for PRH8 software testing during its design.
2. Switch SW1-4 is designed to analyze the functioning of PRH8 during its design and operation.
E1HB8. LED Indications
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LED
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Function
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Status
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Remark
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«ON»
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«OFF»
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LD1
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PLL Synchronization
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Sync. Error
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Normal
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LD2
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Loss of Signal from the Line
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LOS
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Normal
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LD3
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AIS
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Alarm error
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Normal
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LD4
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Frame Alignment Error
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FA error
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Normal
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LD5
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Multi-use
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MF error
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Normal
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LD6
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Board Sync Error
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Error
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Normal
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LD7
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Indication of channel use
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Channel use
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All channel Idle |
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LD8
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Normal operation indication
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Blink
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LD9
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PLL clock selection
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External
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Internal
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Red
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LD10
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In-use indication of 8 Hybrid
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In-use
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Idle
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* Note:
1) In normal operation of slave clock, LED 8 is blinking and LED 9 is turned ON.
2) In normal operation of master clock, LED 8 is blinking and LED 7 is turned ON.
3) If the E1 line has no signal, LED 2, 4, 5 and 7 are turned ON.
4) If at least one of LED 2, 3, 4 and 5 is turned ON, it says the E1 line has faults physically.
So, it needs to contact PXs engineer to check E1 line.
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