Experience on-freeswitch-cluecon2011

Experience on FreeSWITCH Seven Du

About me• Seven Du - seven - 7 - Du Jinfang -• 7+ years of PSTN, from 2001• 3+ years of FS and Erlang - from 2008• Created www.freeswitch.org.cn at 2009• about.me/dujinfang dujinfang@gmail.com

Agenda• Work at the past• Talking to the web• Manage on web - the GUI• SIP tracing• FreeSWITCH in China

Past• China Telecom/Netcom, PSTN• Idapted, EQEnglish• Student (CN) ----- FS ---- Teacher (US)• Problem: SIP/RTP trafﬁc cross the ocean• soﬁa, skypopen, dingaling

fsm_ivr• Written in Erlang using gen_fsm• Like plivo but simpler• Since it’s simple we don’t have a client library like plivo, plain text only

http://localhost/ivr.txtanswerplay welcome.wavread please-input-a-number.wavnext ivr.php

read please-input-a-number.wavnext ivr.php http://localhost/ivr.php set bridge_url=http://..... play calling.wav <?php $dtmf = $_GET[‘dtmf’]; echo “say_digits $dtmf”; echo “bridge $dtmf”; echo “next /blah......”; ?>

Simplified & Enenced API• play file.wav• play file1.wav file2.wav file3.wav• play file_string://file1.wav!file2.wav!file3.wav • say_digits 1234 • say_digits 1234 zh • say_number 1234.56

Well configured default values to make API as simple as it can be• read file.wav• read file.wav max• read file min max• read file min max term• read file min max term timeout

Callbacks • set bridge_url=/call_bridged • set hangup_url=/call_hangupMacros• ola://BEEP• read ﬁle_string://record-after-beep.wav!ola://BEEP

Compatibal with FS APIs It has to be !

Outbound (REST)curl -d "number=1001&ivr_dest=7000&callback=http://localhost:3000/blah" localhost:8765/api/make_call• {"code":"200", "job_id":"4f7fdca6-9a9f-11e0-b28e- a342d0897a44"}• {"code":"702", "error_text":"no trunk available"}

Real world use• calling card• crbt - Color Ring Back Tone• universal number• universal messaging• (not yet opensourced)

Managing on web - the GUI • Why re-invent the wheel?

We use ...• mod_xml_curl• websocket (via socket.IO)• Ruby/Rails for GUI• Erlang as a middleware• RabbitMQ for messaging

• ajax pooling

• ajax pooling• websocket/socket.IO

• Connected websocket• Agent 1000 registered and Ready!

• H/h = Hear/UnHear S/s = Speak/UnSpeak

SIP trace (Tracking 2+ legs) • simply TPORT_LOG (Homer ?) • custom header x_interaction

FreeSWITCH in China• 103 members in FreeSWITCH-CN google groups• 175 members on QQ•-• China has1,339,724,852 People in 2010 not including Hongkong, Macao and Taiwan

SIP/VoIP in China• Backbone/Core switching in telecom carries already IPlized• Only legal (Experimental) in certain cities• Cisco/Avaya for commercial enterprise internal use• Asterisk based products mainly selling cards - openvox Digium Samgoma etc.• FS Community members from small(like me) and big tech companies (Huawei/Alibaba...), and they from assurances, petro, government even military

FS Commercial support in China x-y-t.com

Thanks• about.me/dujinfang• dujinfang@gmail.com

Experience on-freeswitch-cluecon2011

by seven1240 on Sep 04, 2011

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Experience on-freeswitch-cluecon2011 — Presentation Transcript