A method for realizing random calling of dmr equipment by pstn telephone

Abstract

The invention provides a method for enabling a PSTN telephone to arbitrarily call DMR equipment. The method comprises the following steps that 1, a public network user sends a call request to gatewayequipment; 2, the gateway equipment calls DMR network access point equipment after answering the call request of the public network user; 3, the DMR network access point equipment answers immediatelyafter obtaining the call request of the public network user; 4, the DMR network access point equipment sends a prompt tone for requiring the public network user to input a called target DMR equipment / group calling number to the public network user, and a number input timer is started; 5, after hearing the voice prompt, the public network user sequentially inputs the called number in a secondary dialing mode; and 6, the DMR network access point equipment parses out a dialing sequence from a DTMF signal and checks whether or not the number is the valid DMR network access point equipment / group calling number. According to the method, the ability of arbitrarily dialing the DMR network access point equipment / group calling is provided for the public network user by means of the secondary dialingmode, and the requirement on the complexity of a routing rule of the gateway equipment is lowered.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method for realizing arbitrarily calling a DMR device by a PSTN phone. Background technique [0002] With the development of the multi-network convergence communication market and the maturity of the DMR (Digital Mobile Radio) communication protocol, the establishment of a PSTN (Public Switched Telephone Network) fixed line or 2G / 3G / 4G network and DMR The need for communication between communication systems is becoming more and more intense. [0003] At present, the general practice is to use a gateway device as a bridge between the DMR network and these networks. The gateway device is connected to the DMR device through a TCP / IP (Transmission Control Protocol / Internet Protocol) network, and the SIP (Session Initiation Protocol, Session Initiation Protocol; or an extension based on SIP) is used as a communication protocol between the two. The gateway device provides a limited num...

AI Technical Summary

Problems solved by technology

However, the current PSTN / 2G / 3G / 4G public network equipment can only access the DMR network by dialing the gateway access point number, and cannot directly dial the DMR device number, and the DMR device has its own specific numbering rules, it is difficult to configure the gateway Accurate implementation of routing rules

Images