Nortel Meridian 1 Option 11C Manual page 125

ISL Implementation and Maintenance
Port settings:
• For port 3, DCHI X, program the following settings in LD 17:
— CLOK = INT (Internal clock)
— SIDE = SLAV (Slave)
Set NTAK02 port 3 jumper plugs to DCE and RS-422.
• For port 1, DCHI Y, program the following settings in LD 17:
— CLOK = EXT (External clock)
— SIDE = MAS (Master)
Set NTAK02 port 1 jumper plugs to DTE and RS-422.
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Option 11C 2.0 Mb DTI/PRI