CTT602 2 Asterisk

Lm quen vi VoIP CTT602 H thng Vin thng

B mn MMT&VT | Khoa CNTT | H KHTN TP HCM | Thng 7/2013 Trang 1

LM QUEN VI ASTERISK

1. Mc tiu : Bi hng dn gip sinh vin c th:

Nm r c tng quan v nguyn l hot ng ca phn mm tng i Asterisk

Nm c cch s dng Trixbox ci t mt h thng tng i in thoi ni b, cu hnh tng tc gia tng i v softphone.

2. Ni dung

2.1. Gii Thiu Asterisk

Asterisk l h thng chuyn mch tch hp va l cng ngh truyn thng TDM va l chuyn mch VoIP. Hnh m t bn di cho thy kh nng giao tip ca h thng : giao tip vi in thoi Analog thng thng, giao tip vi thit b in thoi VoIP, ngoi ra cn c th giao tip vi mng PSTN v cc nh cung cp VoIP khc. Asterisk l h thng chuyn mch mm, l phn mm ngun m c vit bng ngn ng C chy trn h iu hnh Linux. Asterisk em n cho ngi s dng tt c cc tnh nng v ng dng ca h thng tng i PBX v cung cp nhiu tnh nng m tng i PBX thng thng khng c c, l s kt hp gia chuyn mch VOIP v chuyn mch TDM, v kh nng m rng p ng nhu cu cho tng ng dng Khng gi gn thng tin lin lc trong cng ty m cc ng dng cn c th giao tip vi mng PSTN hoc mng VOIP (nh voice777) cho php gi ra bt c s in thoi no c trn mng PSTN. Ngoi ra vic tch hp vo cc ng dng nh CRM v h thng



Outlook lm cho kh nng ng dng ca Asterisk linh hot hn p ng nhu cu cn thit cho ngi s dng in thoi.

Asterisk thot u c pht trin trn GNU/Linux nn x86 (Intel), nhng gi y n cng c th bin dch v chy trn OpenBSD, FreeBSD v Mac OS X v c Microsoft Windows.

Hnh 1 : S tng qut

2.2. Gii Thiu Trixbox

TrixBox l mt chng trnh m ngun m c xy dng trn nn h iu hnh CentOS kt hp vi phn mm Asterisk. Mc tiu ca TrixBox l cung cp cho ngi dng



nhng giao din v chc nng cu hnh, qun tr h thng Asterisk mt cch thn thin v d dng nht.

Sau khi ci t, chng ta c th cu hnh TrixBox thng qua giao din web bng cch g vo trnh duyt a ch : http://ip-of-trixbox-server

Chuyn sang giao din Admin mode bng cch click chn vo switch gc trn bn phi mn hnh sau g vo ti khong mc nh l : maint/password



Giao din ca menu System Status cho bit trng thi hot ng ca server TrixBox.



Cc cng c cu hnh Asterrisk nm ti menu Asterisk ! FreePBX



2.3. Cu Hnh Giao Tip SIP v IAX

thc hin c cuc gi thng qua h thng Asterisk cn phi cu hnh: th nht l cc knh thng tin hay cc s in thoi extension trong tp tin cu hnh sip.conf, iax.conf sau l cu hnh dialplan trong tp tin cu hnh extension.conf. Trong cc tp tin sip.conf v iax.conf c chia ra lm cc section, mi section gi l ng cnh c t trong cp du []. Mi gi tr trong cp du [] c khai bo l mt knh thng tin sip (iax), ngoi tr section chung [general] l phn cu hnh cc thng s chung cho cc knh SIP (IAX). Cc session cn li l cc thit lp ring cho tng knh v ph nh tt c cc gi tr ti section [general] .

a. Server - Asterisk

To extension cho SIP device.



Vic to s ni b cho IAX Phone thc hin hon ton tng t.

Sau khi to xong danh sch cc s ni b ta phi cp nht thay i ln server



b. Client

SIP phone : s dng phn mm X-Lite



IAX phone : s dng IDEFISK

CTT602 2 Asterisk

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