Circuit switching method for saving group selector resource

Abstract

This invention discloses a circuit exchange method of saving resources of group selection degree divided into two parts: first is a service process part of exchange system MP, mainly finishing the process circuit control of entire calling service to control if self-exchange is needed, if not to call application and release of the resource or when self exchange is going on if needed. MP manages signal phoneme on PSM, signal receiving devices of DTMF and controls the start and stop of RSV self exchange. Second is a service process part on user unit processor PD determining time of self exchangeaccording to orders of MP and automatically finishing the occupation application and release of the resource and managing signal phoneme inside the user process unit and DTMF signal receiving devices.

Description

technical field [0001] The invention relates to a circuit switching method in a digital program-controlled exchange, in particular to a circuit switching method which saves group-level resources by redesigning the call processing process in the same module. Background technique [0002] At present, the call process on the switch is: when the communication between the user processing unit and the main control system of the PSM (Peripheral Switching Module) is normal, no matter whether the calling and called users are on the same user unit or not, they must go through the uplink HW line Switching through the T network occupies group-level resources such as the T network time slot of the switch, DTMF (Dual Tone Multi-Frequency Receiver), and tone circuits. Moreover, when the transmission capacity between the subscriber unit and the PSM (Peripheral Switching Module) is not enough In the case of high traffic due to the limitation of switching system resources, call loss will inev...

AI Technical Summary

Problems solved by technology

[0002] At present, the call process on the switch is: when the communication between the user processing unit and the main control system of the PSM (Peripheral Switching Module) is normal, no matter whether the calling and called users are on the same user unit or not, they must go through the uplink HW line Switching through the T network occupies group-level resources such as the T network time slot of the switch, DTMF (Dual Tone Multi-Frequency Receiver), and tone circuits. Moreover, when the transmission capacity between the subscriber unit and the PSM (Peripheral Switching Module) is not enough In the case of high traffic due to the limitation of switching system resources, call loss will inevitably occur

Especially for some remote user units, because the transmission capacity of the external interface is relatively small, and the number of connected users is relatively large, if the above processing method is still used, the transmission bottleneck will be aggravated and call loss will occur.

In practical application, the transmission bandwidth between PSM (Peripheral Switching Module) and RSU is limited. According to the processing method of the current switching system, calls between users inside the RSU will also occupy the uplink HW of the RSU (Remote Subscriber Unit) In this way, when the traffic volume is large, after the limited uplink HW resource of the RSU is occupied, if a user initiates a call, it will inevitably cause call loss.

Images