Time slot assignment facilities

Details Time slot assignment facilities Time slot assignment facilities

H - Electricity

04

Q

363/1

H04Q 11/04 (2006.01) H04L 27/00 (2006.01) H04M 11/06 (2006.01)

Patent

CA 1200330

- 44 - TIME SLOT ASSIGNMENT FACILITIES Abstract Common resources normally assign a pair of time slots to each port circuit in a PCM switching system.This wastes time slots when the port circuit is used in a manner (voice only service) that requires only a single time slot. The disclosed arrangement eliminates the wasting of time slots by permitting the on-site reconfiguring the system resources so that, when desired, only a single time slot can be assigned to each port circuit. This is accomplished by the removal of a first type of carrier control board (PDI) that controls time slot distribution and by the substitution therefore of a second type of control board (BPDI) that applies the first time slot of a pair to its normally assigned port circuit and applies the second time slot of the same pair to another port circuit on the same carrier that also only requires a single time slot. This permits a given system to be configured initially in a first mode and then be subsequently reconfigured on-site so the port circuits of a carrier can each be assigned either one or two time slots. This arrangement avoids the wasting of time slots or costly on-site modifications as service needs change.

437079

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