5.3.4 Kt ni 2 tng i Asterisk qua SIP trunk

Session Initiation Protocol (SIP) l giao thc bo hiu dng thit lp v iu khin cuc gi VoIP. Cuc gi Sip s dng 2 giao thc: SIP v RTP (Real Time Protocol). RTP dng chuyn ti ting ni
Bc u tin khi thit lp SIP trunk l phc ha nhng cng vic cn lm. Trong hng dn ny s nu cch kt ni 2 tng i (PBX) bng SIP trunk. Hai PBX c t tn l PBX222 v PBX111, ging a ch IP cho cc bn d theo di. Lp extension trn PBX222 s l 1xx, v tng ng 2xx trn PBX111. Vic phn chia dy extension ring bit ny s gip nh tuyn cuc gi c d dng.

Hnh 16: kin trc hai tng i Asterisk

Trn PBX222, cn to outbound trunk tn l111-peer, knh ny kt ni vi PBX cn li s dng ti khon222-user. Ti khon ny s c khai bo trong phn inbound trunk trn PBX111.
Ngc li, ta s dng ti khon111-user cho PBX111 kt ni vi PBX bn kia.
Ch : Bn c th t tn bt k cho trunk v 2 ti khon trn.

tin vic cu hnh, bn c th lm theo hng dn di y- t ng pht sinh cc phn cu hnh trunk. Rt d dng v tin li. Ch cn khai bo IP (hoc hostname) ca 2 tng i, tn 2 trunks, tn 2 ti khon, v 2 mt khu, th l xong.

PBX #1PBX #2

IP address=192.168.1.222IP address=192.168.1.111

Trunk Name =111-peerNames are basedTrunk Name =222-peer

Username =111-useron the destinationUsername =222-user

Password = 111-passwordPassword = 222-password

Outgoing SettingsOutgoing Settings

Create SIP trunk

Trunk Name:111-peerconfigurations betweenTrunk Name:222-peer

Peer Details:two Asterisk PiaF PBXsPeer Details:

host= 192.168.1.111using User/Peer pairinghost= 192.168.1.222

username=222-userusername=111-user

fromuser=222-userfromuser=111-user

secret=222-passwordPBX in a Flash for Newbiessecret=111-password

type=peerby Eugene Blanchardtype=peer

qualify=yeswww.cadvision.com/blanchasqualify=yes

Incoming SettingsIncoming Settings

User Context:111-userUser Context:222-user

User Details:User Details:

secret=111-passwordsecret=222-password

type=usertype=user

context=from-trunkcontext=from-trunk

Sau y l hng dn chi tit cch lm, dng giao din FreePBX.

1. Cu hnh SIP trunks

a. Cu hnh PBX222
- Chn Add Trunk t menu setup FreePBX
- Chn Add SIP Trunk
- Trong mc Outgoing Settings section, thay i nh sau:

Hnh 17: to Trunk Tng i 1
- Khai bo ti khon cho PBX111 trong mc Incoming Settings:

Hnh 18: to incoming setting Tng i 1
- n Submit, ri quay tr ra.
b. Cu hnh PBX111: tng t cc bc trn, vi cc thay i sau:
- Outgoing:

Hnh 19: to Trunk Tng i 2

- Incoming:

Hnh 20: to incoming setting Tng i 2

- Nh n Submit, ri Apply Changes (mu cam)
c. Kim tra kt ni.
- Trn PBX222, ca s Asterisk CLI, g lnh 'sip show peers'. Kt qu:

Hnh 21: xem user c to trn PBX 2
- Tng t cho PBX111, kt qu 'sip show peers'

Hnh 22: xem user c to trn PBX 1

2. nh tuyn cuc gi
Chng ta s cu hnh outbound route c th quay s trc tip extension u bn kia.

a. Outbound cho PBX222
- Chn Outbound Routes, v to Route mi nh sau:

Hnh 22: Outbound Routes PBX 1
b. Outbound cho PBX111: tng t nh hnh v:

Hnh 23: Outbound Routes PBX 2

3. By gi bn c th gi s extension ca bn kia t bt k s ni b no.Tnh trng kt ni trunks s c hin th trong mc FreePBX Statistics.

Hnh 24: trng thi ca mi tng i

Ch : khng c gii hn s lng cuc gi ng thi trn SIP trunk. Ngi dng hai bn c th thoi mi thc hin nhiu cuc gi ng thi cho pha bn kia, min sao bng thng gia 2 PBX m bo .