CN108429864B - Method for realizing arbitrary DMR equipment calling by PSTN telephone - Google Patents
Method for realizing arbitrary DMR equipment calling by PSTN telephone Download PDFInfo
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- CN108429864B CN108429864B CN201810108565.XA CN201810108565A CN108429864B CN 108429864 B CN108429864 B CN 108429864B CN 201810108565 A CN201810108565 A CN 201810108565A CN 108429864 B CN108429864 B CN 108429864B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
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Abstract
A method for realizing any call of a DMR device by a PSTN telephone comprises the following steps: (1) public network users send call requests to gateway equipment; (2) after receiving a call request of a public network user, the gateway equipment calls the DMR network access point equipment; (3) after the DMR network access point equipment obtains a call request of a public network user, immediately answering the call; (4) the method comprises the following steps that DMR network access point equipment sends a prompt tone of a target DMR equipment/group calling number requiring the public network user to input a call to the public network user, and starts a number input timer; (5) after hearing the voice prompt, the public network user inputs the called number in turn in a secondary dialing mode; (6) the DMR network access point device parses the dial sequence from the DTMF signal and checks if the number is a valid DMR network access point device/group call number. The invention gives the public network user the ability of randomly dialing the DMR network access point device/group call in a secondary dialing mode, and reduces the requirement on the routing rule complexity of gateway equipment.
Description
Technical Field
The invention relates to the field of communication, in particular to a method for realizing any call of a DMR (digital Mobile radio) device by a PSTN (public switched telephone network) telephone.
Background
With the development of a multi-Network converged communication market and the increasing maturity of a DMR (Digital Mobile Radio) communication protocol, the communication requirement for establishing a PSTN (Public Switched Telephone Network) fixed Telephone or 2G/3G/4G Network and a DMR communication system is more and more strong.
At present, a gateway device is generally used as a bridge between a DMR network and these networks, the gateway device is connected to the DMR network through a TCP/IP (Transmission Control Protocol/Internet Protocol) network, and an SIP (Session Initiation Protocol, or extension based on the SIP) is used as a communication Protocol between the DMR network and the networks. The gateway device provides a limited number of PSTN/2G/3G/4G public network access points, such as a 4-way FXO (foreign Exchange Office) local telephone interface provided by a PSTN gateway. However, the current PSTN/2G/3G/4G public network device 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 a specific number rule, which is difficult to be implemented accurately by configuring the routing rule of the gateway.
Disclosure of Invention
The invention provides a method for realizing any call of a DMR device by a PSTN telephone, which mainly aims to overcome the problems in the prior art.
The invention is realized by adopting the following technical scheme:
a method for realizing any call of a DMR device by a PSTN telephone comprises the following steps:
(1) public network users send call requests to gateway equipment;
(2) after receiving a call request of a public network user, the gateway equipment calls the DMR network access point equipment;
(3) after the DMR network access point equipment obtains a call request of a public network user, immediately answering the call;
(4) the method comprises the following steps that DMR network access point equipment sends a prompt tone of a target DMR equipment/group calling number requiring the public network user to input a call to the public network user, and starts a number input timer;
(5) after hearing the voice prompt, the public network user inputs the called number in turn in a secondary dialing mode;
(6) the DMR network access point equipment analyzes a dialing sequence from the signal and checks whether the number is a valid DMR network access point equipment/group calling number; if the number is valid, the DMR network access point equipment establishes a call with the DMR equipment, so that the call between the DMR equipment and the public network user is continued; if the number is invalid, the MR network access point equipment informs the public network user to input the number again; if the DMR network access point equipment does not obtain a valid number within the specified time, the input is overtime, the call establishment fails, and the DMR network access point equipment hangs up the call with the public network user.
Further, the secondary dialing mode in the step (5) is a DTMF secondary dialing mode.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages: the method firstly connects the call between the DMR network and the PSTN/2G/3G/4G public network user through the gateway equipment, and then the public network user inputs the specific call target DMR network access point equipment/group calling number through a secondary dialing mode, thereby realizing the random dialing. Meanwhile, the public network user is given the capability of randomly dialing the DMR network access point device/group call in a secondary dialing mode, the requirement on the routing rule complexity of gateway equipment is reduced, and the cost of the intercommunication between the DMR network and the PSTN/2G/3G/4G public network is saved.
Drawings
FIG. 1 is a block flow diagram of the present invention.
Detailed Description
Refer to fig. 1. A method for realizing any call of a DMR device by a PSTN telephone comprises the following steps:
(1) public network users send call requests to gateway equipment;
(2) after receiving a call request of a public network user, the gateway equipment calls the DMR network access point equipment;
(3) after the DMR network access point equipment obtains a call request of a public network user, immediately answering the call;
(4) the method comprises the following steps that DMR network access point equipment sends a prompt tone of a target DMR equipment/group calling number requiring the public network user to input a call to the public network user, and starts a number input timer;
(5) after hearing the voice prompt, the public network user inputs the calling number in sequence in a DTMF secondary dialing mode;
(6) the DMR network access point equipment analyzes a dialing sequence from the DTMF signal and checks whether the number is a valid DMR network access point equipment/group calling number; if the number is valid, the DMR network access point equipment establishes a call with the DMR equipment, so that the call between the DMR equipment and the public network user is continued; if the number is invalid, the MR network access point equipment informs the public network user to input the number again; if the DMR network access point equipment does not obtain a valid number within the specified time, the input is overtime, the call establishment fails, and the DMR network access point equipment hangs up the call with the public network user.
The method firstly connects the call between the DMR network and the PSTN/2G/3G/4G public network user through the gateway equipment, and then the public network user inputs the specific call target DMR network access point equipment/group calling number through a secondary dialing mode, thereby realizing the random dialing. Meanwhile, the public network user is given the capability of randomly dialing the DMR network access point equipment/group calling in a DTMF secondary dialing mode, the requirement on the routing rule complexity of gateway equipment is lowered, and the cost of intercommunication between the DMR network and the PSTN/2G/3G/4G public network is saved.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (2)
1. A method for realizing any call of DMR equipment by PSTN telephone is characterized in that: the method comprises the following steps:
(1) public network users send call requests to gateway equipment;
(2) after receiving a call request of a public network user, the gateway equipment calls the DMR network access point equipment;
(3) after the DMR network access point equipment obtains a call request of a public network user, immediately answering the call;
(4) the method comprises the following steps that DMR network access point equipment sends a prompt tone of a target DMR equipment/group calling number requiring the public network user to input a call to the public network user, and starts a number input timer;
(5) after hearing the voice prompt, the public network user inputs the called number in turn in a secondary dialing mode;
(6) the DMR network access point equipment analyzes a dialing sequence from the signal and checks whether the number is a valid DMR network access point equipment/group calling number; if the number is valid, the DMR network access point equipment establishes a call with the DMR equipment, so that the call between the DMR equipment and the public network user is continued; if the number is invalid, the MR network access point equipment informs the public network user to input the number again; if the DMR network access point device does not receive a valid number within a specified time, the input is timed out, the call setup fails,
and the DMR network access point equipment hangs up the call with the public network user.
2. The method for realizing any call to DMR equipment by a PSTN phone as claimed in claim 1, wherein said method comprises: and (5) the secondary dialing mode in the step is a DTMF secondary dialing mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810108565.XA CN108429864B (en) | 2018-02-02 | 2018-02-02 | Method for realizing arbitrary DMR equipment calling by PSTN telephone |
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| CN201810108565.XA CN108429864B (en) | 2018-02-02 | 2018-02-02 | Method for realizing arbitrary DMR equipment calling by PSTN telephone |
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| CN108429864A CN108429864A (en) | 2018-08-21 |
| CN108429864B true CN108429864B (en) | 2021-03-02 |
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| CN110012366B (en) * | 2019-04-15 | 2021-09-17 | 福建科立讯通信有限公司 | Wide-narrow band converged communication system and method used under public and private network IP interconnection |
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