External DIP Switches | Configuring the | 33 |
T1 Interface - T1 Clock (DIP switch - back)
Switch numbers S1 through S5 are shown on the board within the unit.
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| Data 1 |
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| T1 |
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| FXS Loop Pairs | FXS Loopback |
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| T1 Line | Rx | 24/48 VDC |
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| 1 | 12 13 | 24 | Alm. | Data 1 | Data 2 | Data 2 |
| T1 |
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| + – G |
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| 120 | ||||
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| S5 | S4 | S3 |
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| S1 |
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T1
ONDIP
1 2 3 4 5 6 7
LINE
T1
ONDIP
1 2 3 4 5 6 7
INTERNAL
Description: S1 position 4 is used to select the T1 clock source.
Factory Setting: LINELine: Clock for the T1 interface will be recovered from the line (receive signal).
Internal: Clock for the T1 interface will be taken from an
Note: Failure of external clock causes unit to switch to internal clock. When external clock is restored, the unit will switch back to external clock source.
Issue 1, September 1998 |
© 1998, ADC Telecommunications, Inc.