summary

Freeswitch Is a very easy to use open source VOIP Softswitch platform .

I've been right recently fs Do some functional tests , A requirement generated during testing , How to go from fs Initiate a call and transfer the subsequent call flow to a dialplan On , This will be very convenient and easy to use when testing , It can be modified at any time dialplan Customize business processes .

Through to fs After official document search , Exclude “transfer”、“execute_extension”、“bind_meta_app”, By chance “originate” Interfaces can directly implement such functional requirements .

Environmental Science

centos：CentOS  release 7.0 (Final) Or above

freeswitch：v1.8.7

GCC：4.8.5

originate

originate It's a API Interface , The interface format is as follows .

originate <call url> <exten>|&<application_name>(<app_args>) [<dialplan>] [<context>] [<cid_name>] [<cid_num>] [<timeout_sec>]

Interface instance .

originate {origination_caller_id_number=9005551212}sofia/default/[email protected] &bridge({origination_caller_id_number=8001234567}sofia/profile/[email protected])

From the interface format ,originate The interface can use “&” Pick up a APP Interface , Continue the process after the call is connected , But sometimes one APP It's not enough , So we need to be in “originate” Then transfer the call flow to dialplan Continue to deal with .

turn dialplan Interface instance of .

originate {origination_caller_id_number=9005551212}sofia/default/[email protected] 19005551212 XML default CALLER_ID_NAME CALLER_ID_NUMBER

In this case , Use originate The interface initiates a call , Then go to XML Type of dial plan “default” in .

To configure

Modify the configuration file “/usr/local/freeswitch/conf/dialplan/test.xml”.

<include>

<context name="ext_test">

<extension name="test" continue="false">

<condition field="destination_number" expression="^(\d+)$">

<action application="sched_hangup" data="+10"/>

<action application="send_dtmf" data="1234"/>

<action application="sleep" data="5000"/>

<action application="endless_playback" data="/usr/local/freeswitch/sounds/101-baidu-mp3.mp3"/>

</condition>

</extension>

</context>

</include>

test

stay freeswitch Use in command line originate Make a call , Then go to the dial plan ext_test send out DTMF.

[email protected]> originate {originator_codec=PCMA,origination_caller_id_number=0755110}sofia/external/sip:[email protected]:5080 1001 XML ext_test

fs call 138 On the server 1001, After the call is connected , send out DTMF And play the prompt voice , The log is as follows .

[email protected]> originate {originator_codec=PCMA,origination_caller_id_number=0755110}sofia/external/sip:[email protected]:5080 1001 XML ext_test

...

2022-06-13 11:37:15.601015 [DEBUG] sofia.c:7084 Channel sofia/external/[email protected]:5080 entering state [ready][200]

...

2022-06-13 11:37:15.610983 [INFO] mod_dialplan_xml.c:637 Processing  <0755110>->1001 in context ext_test

Dialplan: sofia/external/[email protected]:5080 parsing [ext_test->test] continue=false

Dialplan: sofia/external/[email protected]:5080 Regex (PASS) [test] destination_number(1001) =~ /^(\d+)$/ break=on-false

Dialplan: sofia/external/[email protected]:5080 Action sched_hangup(+10)

Dialplan: sofia/external/[email protected]:5080 Action send_dtmf(1234)

Dialplan: sofia/external/[email protected]:5080 Action sleep(5000)

Dialplan: sofia/external/[email protected]:5080 Action endless_playback(/usr/local/freeswitch/sounds/101-baidu-mp3.mp3)

...

EXECUTE sofia/external/[email protected]:5080 sched_hangup(+10)

EXECUTE sofia/external/[email protected]:5080 send_dtmf(1234)

2022-06-13 11:37:15.610983 [DEBUG] switch_core_io.c:1918 sofia/external/[email protected]:5080 send dtmf digit=1 ms=250 samples=2000

...

EXECUTE sofia/external/[email protected]:5080 sleep(5000)

...

EXECUTE sofia/external/[email protected]:5080 endless_playback(/usr/local/freeswitch/sounds/101-baidu-mp3.mp3)

...

2022-06-13 11:37:25.121013 [DEBUG] switch_ivr_play_say.c:1942 done playing file /usr/local/freeswitch/sounds/101-baidu-mp3.mp3

...

2022-06-13 11:37:25.121013 [DEBUG] mod_sofia.c:440 Channel sofia/external/[email protected]:5080 hanging up, cause: ALLOTTED_TIMEOUT

summary

Use originate Interface , Call forwarding can be realized directly dialplan Business process .

Think about it , adopt bridge Transfer to a dailplan It should also have the feasibility of implementation . The specific situation has not been thoroughly understood .

Empty as usual

Be serious

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