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Extension lines without call ID.

The switch has a call identifier for all the telephone lines without requiring any other accessory.

Nevertheless, it is necessary to program the lines and extension lines of the switch, contract the service in the telephone company and enable the function altering the jumper in the trunk board J4 and J5. 

 

The switch has a call identifier for all the telephone lines without requiring any other accessory.

Nevertheless, it is necessary to program the lines and extension lines of the switch, contract the service in the telephone company and enable the function altering the jumper in the trunk board J4 and J5.