CN109246318B - Extension telephone callback method - Google Patents

Abstract

The invention discloses a method for calling back extension telephone, which mainly comprises the following operations: step a: when detecting that the internal extension sets relay the calling outside line users through the IPPBX, pre-storing the corresponding relation of the calling into a database; step b: receiving a call request initiated by an external line user, and detecting the type of an IPPBX relay; step c: corresponding dialing schemes are selected for different types of relays. The invention aims to realize the function of directly skipping a telephone exchange and calling an internal extension when an external user finishes a call with the internal or the external user misses the call because the external user does not answer/busy, and wants to call with the same internal extension user again.

Description

Extension telephone callback method

Technical Field

The invention belongs to the technical field of IP communication, and particularly relates to a group extension communication management technology.

Background

Currently, group phones are widely used in office institutions of enterprises, and the office efficiency of the enterprises is greatly improved. An IP PBX is an IP-based corporate telephone system. The system can integrate voice communications entirely into a company's data network, thereby establishing a unified voice and data network that can connect to office sites and employees distributed throughout the world.

The IP PBX can provide comprehensive network and voice solutions for group users, and can meet the omnibearing requirement of keeping the continuous operation and vigorous development of enterprises. From complex call control and call center capabilities to integrated voice mail and computer/telephony integration; from caller identification to multiple, multi-level automated crews, easy addition, movement and change to terminal phones; connection capability to the Internet from local and wide area networks (LAN/WAN). Enabling the enterprise to obtain all functions in an economical and manageable manner. The most excellent feature of IP PBX communication systems should be their flexibility. It is suitable for enterprise operation mode.

In the current scenario, when an internal extension calls a mobile phone or a base phone (hereinafter referred to as an external user) through a relay, an incoming call number displayed by the external user is a telephone exchange number. If busy or unresponsive, the outside subscriber needs to find his number to call before, but can only call through the exchange, but after time it takes to call to his internal extension before, because the specific number is not known.

Disclosure of Invention

The invention aims to provide an extension telephone callback method which can enable an outside user to quickly callback to the extension number recently dialed.

In order to achieve the above object, the present invention provides an extension telephone callback method, which mainly comprises the following operations: step a: when detecting that the internal extension sets relay the calling outside line users through the IPPBX, pre-storing the corresponding relation of the calling into a database; step b: receiving a call request initiated by an external line user, and detecting the type of an IPPBX relay; step c: corresponding dialing schemes are selected for different types of relays.

Preferably, in step a, if an analog relay is used, detecting that the internal extension relays the calling outside line user through the ip pbx, the calling correspondence is stored in the database, where the calling correspondence refers to: the number of the internal extension and the number of the outside subscriber, and the ip pbx relay number used.

Preferably, step c further comprises: playing a prerecorded prompt tone, and selecting a call destination by an outside user according to a service button played by the prompt tone; and according to the selection of the user, acquiring the internal extension number of the IPPBX corresponding to the number of the outside line user and the relay number from the prestored call corresponding relation.

Preferably, step c further comprises: deleting the data of the call corresponding relation; and setting a call destination initiated by the external line user as a corresponding internal extension through a dialing scheme, and initiating a call.

Preferably, the alert tone operation includes: the user calls the switchboard according to 1; the 2 call to the number that was previously called.

Preferably, in step a: if a non-analog relay is used, after detecting that the outside user is not answering or busy, storing the call correspondence in a database, wherein the call correspondence refers to: the number of the internal extension and the number of the external subscriber, and the relay number used.

Preferably, step c comprises: when a call request initiated by an external line user is received, acquiring an internal extension number of the IPPBX corresponding to the number of the external line user and a relay number from a prestored call corresponding relation; deleting the call corresponding relation; and setting a call destination initiated by the external line user as a corresponding internal extension through a dialing scheme, and initiating a call.

Preferably, the non-analog relay includes: SIP relay, digital relay, which can interface with a variety of devices.

Preferably, the internal extension number of the ip pbx corresponding to the number of the outside line user and the relay number is obtained from a pre-stored correspondence, and specifically includes: and sending a query request to the database, searching to obtain the corresponding internal extension number of the IPPBX according to the number of the external line user and the relay number used by the call, replacing the original called number, deleting the data in the database, and if the data in the database does not exist, maintaining the original flow and calling the switchboard.

Preferably, when the call correspondence is stored in advance, the number of the outside user and the relay number are used as the primary key, and the latest information of the same outside user called through the same relay is stored in a manner of being covered with old information.

The technical proposal provided by the invention can ensure that when the external line user calls the telephone exchange number, the external line user selectively calls the internal extension telephone which is expected to call, thereby improving the work communication efficiency.

Drawings

Fig. 1 is a flowchart of a method for calling back an extension number according to an embodiment of the present invention;

fig. 2 is a flow chart of a method for calling back an extension number in the first embodiment of the invention;

fig. 3 is a flowchart of a calling back extension number method in the second embodiment of the present invention;

fig. 4 is a flow chart of a method for calling back an extension number through SIP or digital relay in the second embodiment of the present invention;

fig. 5 is a flowchart of a method for calling back an extension number through analog trunking in the second embodiment of the invention.

Examples

The basic principle of the invention is as follows: the invention stores the corresponding relation of the call: when the outside user calls the exchange, the stored corresponding relation is searched by the used relay number and outside user number. If no corresponding relation exists, the original flow is kept, and the switchboard is called; if there is a correspondence, the internal extension number is taken out and the extension is called.

Since the present invention is based on an IP PBX, a differentiated design was made in view of the presence of various relays. The flow of the analog relay is different from that of the SIP relay and the digital relay, and the analog relay cannot detect the call state under the condition that the polarity inversion is not started.

The invention discloses an extension telephone callback method, which distinguishes whether an analog relay is provided with two different callback dialing schemes or not. By simulating the calls made by the trunk, the ip pbx considers that the internal extension calls the telephone number assigned by the trunk, and the call state is always answered, so that no matter whether the outside line user answers or not, a service storage request is sent to the ip pbx.

In the specific examples of the present invention, two inventive embodiments are described:

inventive example one: the method obtains the internal extension telephone of the user who has recently called the external line through CDR (history record of telephone call) data existing in the IPPBX by taking the external line user number and the relay name as keywords, and executes a command in a dialing scheme to realize callback; inventive example two: after receiving the call request of the outside line user, the relation stored in the database uses the outside line user number and the used relay number as keywords to acquire the internal extension of the last called outside line user, and executes the call command in the dialing scheme to realize callback.

Specifically, in operation, when detecting that the internal extension calls an outside line user through a relay (switchboard) of the ip pbx, if an analog relay is used, the corresponding relationship is as follows: the number of the internal extension and the number of the external line user and the used relay number are stored in a database; when receiving a call request initiated by an external user, playing the prerecorded prompt tone, and selecting the call destination by the external user according to a service button played by the prompt tone: the exchange either previously called his internal extension; acquiring an internal extension number of the IPPBX corresponding to the number and the relay number of the external user from a pre-stored corresponding relation according to the selection of the user, and deleting the data of the corresponding relation; and setting the call destination initiated by the external line user as a corresponding internal extension through a dialing scheme, and initiating a call.

In the analog relay scheme, prerecorded alert tones: welcome-! Telephone calls are missed by 1 to the switchboard and by 2 to the telephone. According to the alert tone, the user calls 1 to the switchboard and 2 to the number that was previously called. This process is not reversible. A timeout or a key press error exceeding three times is considered an invalid call.

If digital relay or SIP relay is used, after detecting that the outside user is not listening or busy, the correspondence is set: the number of the internal extension and the number of the external line user and the used relay number are stored in a database; when a call request initiated by an external line user is received, acquiring an internal extension number of the IPPBX corresponding to the number and the relay number of the external line user from a prestored corresponding relation, and deleting the corresponding relation; and setting the call destination initiated by the external line user as a corresponding internal extension through a dialing scheme, and initiating a call.

The method for obtaining the internal extension number of the IPPBX corresponding to the number of the outside line user and the relay number from the pre-stored corresponding relation specifically comprises the following steps: and sending a query request to a database of the IPPBX equipment, searching and obtaining the corresponding internal extension number of the IPPBX according to the number of the outside line user and the relay number used by the call, replacing the original called number, and deleting the data in the database. If the related data does not exist in the database, the original flow is kept, and the switchboard is called. The pre-stored correspondence uses the number of the outside line user and the relay number as the main key, the latest information of the same outside line user called through the same relay is covered and stored with the old information, and the outside line user calls back to the internal extension which has been recently dialed. Considering traffic and memory, a maximum of 1000 pieces of information will be stored, and after exceeding, the oldest 100 pieces of information will be deleted according to the trigger set by the database.

The relays of the ip pbx include analog relays, SIP relays, and digital relays, which can interface with a variety of devices. By simulating the calls made by the trunk, the ip pbx considers that the internal extension calls the telephone number assigned by the trunk, and the call state is always answered, so that no matter whether the outside line user answers or not, a service storage request is sent to the ip pbx. Deleting or disabling the corresponding relationship stored by the relay to be associated with deletion.

And the processing mode is that the destination number is set as the acquired internal extension number in the dialing scheme, and the call is initiated.

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. It should be further noted that, for convenience of description, only some, but not all, of the procedures/structures related to the present invention are shown in the drawings.

Fig. 1 is a flowchart of a callback extension number method in the first embodiment of the present invention, and fig. 2 is a flowchart of a callback extension number method in the first embodiment of the present invention. As can be seen in fig. 1 and fig. 2, the callback scheme of the first embodiment specifically includes the following procedures: step 101: ip pbx internal extension 4005 dials external line use 057112124545.

Step 10 2: the caller (4 00 5) initiates a call through the ip bx relay, calling outside line user number 057112124545.

Step 103: the external telephone rings and the number of the caller is 051278969687 (telephone exchange number).

Step 104: the outside user is either not listening or is busy.

Step 105: the ip pbx receives the outside user's unanswered message.

Step 106: the IPPBX sends the called not to the calling extension.

Step 107: the internal extension hangs up and the call ends.

Step 108: the CDR module of the ip pbx records call specific information in detail: including the calling number (here an internal extension number), the called number (outside subscriber number), the call start time (in the format year-month-day-minute-second), the call status (busy/no answer/failed), the used trunk name, and some other data not relevant to the present solution, are stored in the CDR database. The following table shows:

since this step is the prior art, it will not be described in detail.

Step 109: an outside user dials the switchboard 051278969687.

Step 110: the outside line user enters through the relay peer 450.

Step 111: the calling state is not answered, the latest call start time is used as a query condition, the internal extension number is searched, if not, step 117 is performed.

Step 112: after the internal extension number is obtained, a call to that extension is initiated.

Step 113: the internal extension rings, and the caller ID number is 057112124545.

Step 114: the internal extension picks up the call and answers, and the IPPBX sends a call answer message.

Step 115: and establishing the call between the internal extension and the outside line user.

Step 116: both parties talk.

Step 117: and (4) maintaining the original flow, calling the switchboard and entering a default destination.

The second embodiment of the present invention differs from the first embodiment in that: the method does not rely on CDR records which can be deleted by a super administrator of the IPPBX or influenced by other business operations at will, but uses a database which is created by the user and is used for storing the corresponding relation formed by the internal extension numbers, the external line user numbers and the used relay numbers, and does not provide an interface for manual deletion. The relay number defaults to an uneditable state, is more reliable than the relay name, and the relay sets the telephone number as 057198765432. In addition, the call state is not stored, and is directly judged in the dialing scheme, so that occupied memory is reduced

A storage space.

Fig. 3 is a flowchart of a calling back extension number method in the second embodiment of the present invention, fig. 4 is a flowchart of a method for calling back an extension number through SIP or digital relay in the second embodiment of the present invention, and fig. 5 is a flowchart of a method for calling back an extension number through simulation in the second embodiment of the present invention

And (5) a flow chart of a method for calling back the extension number. As can be seen from these figures, the second callback scheme of the embodiment specifically includes the following steps:

step 201: internal extension 1505 dials outside line subscriber 137XXXX4545.

Step 202: the outside subscriber is called through the relay (switchboard) of the ip pbx.

Step 203: the outside user rings, and the caller ID number is the switchboard number 057198765432.

Step 204: by the protocol parameters in the dial plan, it is determined that if an analog relay is used, the process proceeds to step 205, and if other relays are used, the process proceeds to step 206.

Step 205: the correspondence, regardless of the call state, is inserted into the database and the process proceeds to step 208. Database structure

The following table shows:

step 206: the ip pbx receives messages that the outside user does not answer.

Step 207: the ip pbx stores the correspondence of calls that are not answered (call state is not answered, busy, server rejection and call path unavailable for data storage) (calling extension, outside line user and relay number) into a database.

Step 208: because the device has an upper storage limit, after the corresponding relation stored in the database reaches 1000 pieces, the trigger set in the database can delete the earliest 100 pieces of data.

Step 209: and the IPPBX sends the message that the called party does not answer to the calling extension.

Step 210: the calling extension hangs up.

Step 211: the outside line user dials the switchboard and enters the office through the relay.

Step 212: after the ip pbx receives the call request from the outside user, it determines the type of relay used for the call in the dialing plan, and if not, proceeds to step 214.

Step 213: the play alert tone allows the outside user to select, press 1 to call to the switchboard, press 2 to the last internal extension number that has been called, and use the # key as the end key. A key error more than three times or a key timeout more than three times will be considered an invalid call, and go to step 221, repeat step 213 within three times of the key error or timeout.

Step 214: the method is characterized in that the method comprises the steps of inquiring a database by taking an external user number and a relay name as values of a key word called number and a used relay number, and acquiring all data in the database after a simple search does not obtain a result due to the fact that the external user carries an area code, so that character string matching inquiry is carried out. If no correspondence is found, the process proceeds to step 217, where the correspondence is found, the internal extension number is obtained, and the correspondence in the database is deleted.

Step 215: if the call uses analog trunking and the user presses 1, go to step 217.

Step 216: the internal extension number obtained by the lookup is called, the call is made, and the process proceeds to step 218.

Step 217: the original flow is carried out, the telephone exchange is called, and the subsequent flow is not repeated.

Step 218: the registered phones of the internal extension ring.

Step 219: and sending information off-hook to establish a call.

Step 220: both parties talk.

Step 221: and playing a bye prompt tone, hanging up and ending the call.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described, but is capable of numerous modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention.

Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (5)

1. A method of callback of an extension telephone, the method comprising the acts of:

step a: judging the type of the relay when detecting that the internal extension calls an external user through the IPPBX relay; if the use of analog relay is detected, storing the call correspondence in a database when the internal extension is detected to relay the call to the outside line user through the IPPBX; if the detection uses the non-analog relay, pre-storing the call corresponding relation into a database after detecting that the outside line user is not answered or busy; wherein, the call correspondence refers to: the number of the internal extension and the number of the outside user, as well as the ip pbx relay number used;

step b: receiving a call request initiated by the outside line user, and detecting the type of the IPPBX relay;

step c: if the analog relay is detected to be used, playing a prerecorded prompt tone when receiving a call request initiated by an external user, and selecting a call destination by the external user according to a service button played by the prompt tone: the exchange either previously called his internal extension; acquiring an internal extension number of the IPPBX corresponding to the number and the relay number of the outside line user from a pre-stored corresponding relation according to the selection of the user, and deleting the data of the corresponding relation; setting the call destination initiated by the outside line user as a corresponding internal extension through a dialing scheme, and initiating a call;

if the use of a digital relay or an SIP relay is detected, when a call request initiated by an external user is received, acquiring an internal extension number of the IPPBX corresponding to the number of the external user and a relay number from a prestored corresponding relation, and deleting the corresponding relation; and setting the call destination initiated by the external line user as a corresponding internal extension through a dialing scheme, and initiating a call.

2. The callback method of claim 1, wherein said alert tone operation comprises: the user calls the switchboard according to 1; the 2 call to the number that was previously called.

3. The callback method of claim 1, wherein said non-analog trunking comprises: SIP relay, digital relay, which can interface with a variety of devices.

4. The callback method according to claim 3, wherein the internal extension number of the ip pbx corresponding to the number of the outside line subscriber and the relay number is acquired from a pre-stored correspondence relation, specifically comprising: and sending a query request to the database, searching to obtain the corresponding internal extension number of the IPPBX according to the number of the external line user and the relay number used by the call, replacing the original called number, deleting the data in the database, and if the data in the database does not exist, maintaining the original flow and calling the switchboard.

5. The callback method according to claim 4, wherein when the call correspondence is stored in advance, old information is stored by using the number of the outside user and the relay number as a primary key and newly information of the same outside user called through the same relay is overwritten.