Asterisk : The Cookbook 食譜 003 - 功能摘要

Q003: Asterisk 會不會太簡單了？我想做轉接、視訊會議、多方通話...

Asterisk 是專業的，而且我們也相信實際上也沒有任何一家電信廠商可以不計任何代價滿足大家的需求。對 Asterisk 而言，這些都是可以做到的，只要您付出些時間閱讀本系統食譜。

我們也相信，世界上已經有相當多的電信商其實背後是採用 Asterisk 來提供各種豐富的服務，而這些是那些沒有採用 Asterisk 的電信商做不到的。

底下我就不翻譯，直接列出幾個（其實是一大堆）Asterisk 能夠提供的電信服務：

1. Call Features
1. ADSI On-Screen Menu System
2. Alarm Receiver
3. Append Message
4. Authentication
5. Automated Attendant
6. Blacklists
7. Blind Transfer
8. Call Detail Records
9. Call Forward on Busy
10. Call Forward on No Answer
11. Call Forward Variable
12. Call Monitoring
13. Call Parking
14. Call Queuing
15. Call Recording
16. Call Retrieval
17. Call Routing (DID & ANI)
18. Call Snooping
19. Call Transfer
20. Call Waiting
21. Caller ID
22. Caller ID Blocking
23. Caller ID on Call Waiting
24. Calling Cards
25. Conference Bridging
26. Database Store / Retrieve
27. Database Integration
28. Dial by Name
29. Direct Inward System Access
30. Distinctive Ring
31. Distributed Universal Number Discovery (DUNDi™)
32. Do Not Disturb
33. E911
34. ENUM
35. Fax Transmit and Receive
36. Flexible Extension Logic
37. Interactive Directory Listing
38. Interactive Voice Response (IVR)
39. Local and Remote Call Agents
40. Macros
41. Music On Hold
42. Music On Transfer:
1.   Flexible Mp3-based System
2.   Random or Linear Play
3.   Volume Control
43. Privacy
44. Open Settlement Protocol (OSP)
45. Overhead Paging
46. Protocol Conversion
47. Remote Call Pickup
48. Remote Office Support
49. Roaming Extensions
50. Route by Caller ID
51. SMS Messaging
52. Spell / Say
53. Streaming Hold Music
54. Supervised Transfer
55. Talk Detection
56. Text-to-Speech (via Festival)
57. Three-way Calling
58. Time and Date
59. Transcoding
60. Trunking
61. VoIP Gateways
62. Zapateller
63. Voicemail:
1.   Visual Indicator for Message Waiting
2.   Stutter Dialtone for Message Waiting
3.   Voicemail to email
4.   Voicemail Groups
5.   Web Voicemail Interface
2. Computer-Telephony Integration
1. Asterisk Gateway Interface (AGI)
2. Asterisk Manager Interface (AMI)
3. Asterisk REST Interface (ARI)
4. Outbound Call Spooling
3. Scalability
1. TDMoE (Time Division Multiplex over Ethernet)
2. Allows direct connection of Asterisk PBX
3. Zero latency
4. Uses commodity Ethernet hardware
5. Voice-over IP
6. Allows for integration of physically separate installations
7. Uses commonly deployed data connections
8. Allows a unified dialplan across multiple offices
4. Speech
1. Cepstral TTS
2. Lumenvox ASR
5. Codecs
1. ADPCM
2. CELT (pass through)
3. G.711 (A-Law & μ-Law)
4. G.719 (pass through)
5. G.722
6. G.722.1 licensed from Polycom®
7. G.722.1 Annex C licensed from Polycom®
8. G.723.1 (pass through)
9. G.726
10. G.729a
11. GSM
12. iLBC
13. Linear
14. LPC-10
15. Speex
16. SILK
6. VoIP Protocols
1. Google Talk
2. H.323
3. IAX™ (Inter-Asterisk eXchange)
4. Jingle/XMPP
5. MGCP (Media Gateway Control Protocol
6. SCCP (Cisco® Skinny®)
7. SIP (Session Initiation Protocol)
8. UNIStim
7. Traditional Telephony Protocols
1. E&M
2. E&M Wink
3. Feature Group D
4. FXS
5. FXO
6. GR-303
7. Loopstart
8. Groundstart
9. Kewlstart
10. MF and DTMF support
11. Robbed-bit Signaling (RBS) Types
12. MFC-R2 (Not supported. However, a patch is available)
8. ISDN Protocols
1. AT&T 4ESS
2. EuroISDN PRI and BRI
3. Lucent 5ESS
4. National ISDN 1
5. National ISDN 2
6. NFAS
7. Nortel DMS100
8. Q.SIG