Freeswitch uses Mod_ Shot module plays mp3

 

summary

freeswitch In the face of VOIP Voice call , Can pass playback Command play IVR Voice files .

By default ,freeswitch Support wav file , You can also play directly VOIP Common codec in G711 file 、G729 Documents, etc. , But yes. mp3 Is not supported .

By inquiring freeswitch Official documents of , Find out mod_shout The module can support MP3 File playback .

mod_shout Modules are not installed by default , You can decide whether to compile and install according to your needs .

Environmental Science

centos：CentOS  release 7.0 (Final) Or above

freeswitch：v1.6.19

GCC：4.8.5

rely on

mod_shout Module installation requires third-party library support ,centos Of yum Please refer to the document for the source setting method “freeswitch Bring their own yum Source configuration mode ”.

sudo yum install libshout-devel lame-devel libmpg123-devel

install

go back to freeswitch Source root , To regenerate the makefile.

./bootstrap.sh -j

./configure

Compilation and installation mod_shout modular

cd  src/mod/formats/mod_shout/

make

sudo make install

ll /usr/local/freeswitch/mod/mod_shout*

-rwxr-xr-x. 1 root root   1322 May 19 11:43 /usr/local/freeswitch/mod/mod_shout.la

-rwxr-xr-x. 1 root root 168560 May 19 11:43 /usr/local/freeswitch/mod/mod_shout.so

To configure

mod_shout After the module is installed , modify fs Configuration of .

Upload MP3 Playback file .

ll /usr/local/freeswitch/sounds/101-baidu-mp3.mp3

-rw-r--r--. 1 root root 12096 May 17 17:55 /usr/local/freeswitch/sounds/101-baidu-mp3.mp3

modify /usr/local/freeswitch/conf/autoload_configs/modules.conf.xml file .

<load module="mod_shout"/>

modify /usr/local/freeswitch/conf/dialplan/test.xml file .

<include>

        <context name="default">

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

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

                                <action application="answer"/>

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

                                <action application="hangup" data="CALL_REJECTED"/>

                        </condition>

                </extension>

        </context>

</include>

After configuration , start-up freeswitch, And confirm mod_shout The module starts normally .

[email protected]> module_exists  mod_shout

true

test

Use eyebeam register 1001 Account to fs, And initiate a call to 1002,1001 You can hear fs Of IVR Playback .

When we don't load mod_shout Module time , The log is as follows .

EXECUTE sofia/internal/[email protected] playback(/usr/local/freeswitch/sounds/101-baidu-mp3.mp3)

2022-05-19 13:49:55.573314 [ERR] switch_core_file.c:272 Invalid file format [mp3] for [/usr/local/freeswitch/sounds/101-baidu-mp3.mp3]!

EXECUTE sofia/internal/[email protected] hangup(CALL_REJECTED)

Reload mod_shout modular , And initiate a call , Check the log below .

EXECUTE sofia/internal/[email protected] playback(/usr/local/freeswitch/sounds/101-baidu-mp3.mp3)

2022-05-19 11:57:20.393239 [DEBUG] switch_ivr_play_say.c:1498 Codec Activated [email protected] 1 channels 20ms

2022-05-19 11:57:20.473273 [DEBUG] switch_rtp.c:7273 Correct audio ip/port confirmed.

2022-05-19 11:57:20.613239 [DEBUG] sofia.c:7084 Channel sofia/internal/[email protected] entering state [ready][200]

2022-05-19 11:57:26.433297 [DEBUG] switch_ivr_play_say.c:1942 done playing file /usr/local/freeswitch/sounds/101-baidu-mp3.mp3

EXECUTE sofia/internal/[email protected] hangup(CALL_REJECTED)

summary

MP3 The file is a compressed format , More than usual wav（pcm） Small 8 About times , It has great advantages in space occupation and transmission bandwidth .

We should have more different tools , Choose the most appropriate solution in different application scenarios .

Empty as usual

Be serious