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Перечень доступного оборудования
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The Primary Rate Interface Board (PRIB) provides one (1) PRI interface, or one (1) E1R2 interface; this interface supports 30 PCM bearer and 2 signaling channels for PRI or E1R2. The PRIB 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, a data rate of 2.048MHz. From 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 (TS). 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 for frames 1-15. The PRIB supports pulse dialing, DTMF dialing, and MFC-R2 register signaling (based on ITU-T Recommendation Q.440-480).
PRIB can be installed on the universal slot No. 1-6 of any KSU except the slot No. 1 of 1st KSU.
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CAUTION
For QSIG operation, check the mode setting method and the contact assignments of RJ45 type connector according to the mode of line, TE or NT.
NOTE:
iPECS-MG does not support daisy chained clock cable. The ISDN clock priority and synchronization is controlled by the MPB software (refer to PGM 301).
The default clock priority for Slots and KSUs is as follows unless modified by the Admin.:
- Board – PRIB>BRIB2/BRIB4>Internal Clock
- KSU – 1’st KSU>2’nd KSU>3’rd KSU
- Slot – Slot 1>Slot 2>…>Slot 18
Pin Assignment
RJ45, PRI 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
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RX+
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2
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RX-
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4
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TX+
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5
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TX-
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3
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N/A
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6
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N/A
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7, 8
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N/A
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Serial 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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Serial to
Audio Jack
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1
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Signal Ground
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2
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Receive Data
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3
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Transmit Data
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4
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Signal Ground
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Connectors, Switch, and LED Functions
Connector and Switch Functions
CONNECTOR/
SWITCH
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FUNCTION
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REMARK
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SW1
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Initialization mode (OFF – PRI, ON – E1R2)
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Default: PRI mode
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SW2
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Not used
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SW3
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Reset switch
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SW4
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Depends on S/W function (E1R2 only)
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PRI mode: not used
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CN1
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JTAG port for CPU emulator
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CN2
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JTAG port for DSP emulator
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CN3
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JTAG port for CPLD
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LED Indication
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LED
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PRI MODE
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E1R2 MODE
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REMARK
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LD1
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PLL Synchronization
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RED Color
(ON: Error,
OFF: Normal)
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LD2
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Loss of Signal from the Line
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LD3
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Alarm Indication Signal
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LD4
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Remote Alarm Indication
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Frame Alignment Error
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LD5
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Multi Frame Error
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LD6
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CRC Error
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CRC (ON : Enable, OFF : Disable)
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LD7
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Normal operation indication (Activity Indication)
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Blue (Blink)
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LD8
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Indication of channel use
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Blue Color
(ON: Ch. Use,
OFF: All ch. Idle)
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| PRI Line Connector Configuration |
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