8. VoIP технологийн танилцуулга
PBX (Private Branch Exchange)
Features
-
Establishing connections
(circuits) between the
telephone sets of two users
-
Channeling voice signals
between the users
-
Providing information for
accounting purposes
12. VoIP технологийн танилцуулга
• SIP (Session Intitation Protocol)
– SIP, the session intitation protocol, is the IETF protocol for VOIP and
other text and multimedia sessions, like instant messaging, video and
other services.
13. VoIP технологийн танилцуулга
IAX (Inter-Asterisk Exchange)
developed by Digium for the purpose of communicating with other
Asterisk servers (hence “the Inter-Asterisk eXchange protocol”).
IAX is a transport protocol that uses a single UDP port (4569) for both
the channel signaling and RTP streams.
17. Asterisk PBX танилцуулга
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
Alarm Receiver
Append Message
Calling Cards
Conference Bridging
Distinctive Ring
Protocol Conversion (IAX->SIP)
Roaming Extensions
Supervised Transfer
Transcoding (ulaw->gsm etc.)
Three-way Calling
Voicemail to email (attach audio file)
Web Voicemail Interface
...
18. Asterisk PBX танилцуулга
Platform:
• Unix / Linux / Mac OS X
• Win32 http://www.asteriskwin32.com/
Hardware supported with two channels:
TAPI channel:
support TAPI compatible hardware full duplex & half duplex devices
(most of voice modem devices).
CAPI channel:
ISDN device CAPI compatible
26. Asterisk PBX хэрэглээ
Video Transmission
• Supported Channels :
– SIP, IAX2
• Supported Video Codecs :
– H.261, H.263, H.263p
• Supported Video Codecs :
–
–
–
–
–
AuPix SIP and H.323 video phone
iFon: for PocketPC PDAs
Microsoft Windows Messenger for Windows PC's
X-Lite, eyeBeam for Windows and OSX
Kapanga Sip Video Phone
29. Asterisk PBX хэрэглээ
AGI (Asterisk Gateway Interface)
The Asterisk Gateway Interface provides external programs may
control the Asterisk dialplan. Communicate with relational databases
(such as PostgreSQL or MySQL)
/var/lib/asterisk/agibin
Example:
•
•
exten => 123,1,Answer( )
exten => 123,2,AGI(agi-test.agi)
30. Asterisk PBX хэрэглээ
• Festival (Text-to-Speech)
Festival is a popular open source text-to-speech engine.
• Example: (extensions.conf)
•
•
exten => 123,1,Answer( )
exten => 123,2,Festival(Asterisk and Festival are working together)
31. Asterisk PBX хэрэглээ
• Asterisk-IM (Jive Software Integration)
• Integration component to Asterisk for Jive's
Jabber/XMPP server
32. Asterisk PBX хэрэглээ
Billing System: Asterisk2Billing
•
•
•
•
•
•
•
•
•
Authenticate with the use of a Cardnumber
Reporting
Rate-engine
Simultaneous access for same card
SIP/IAX Friends Management
post-pay & prepay
Recurring service over the card
Reload Asterisk through UI & manager
IVR Customization - (say balance, forwarding, …)