VoIP -- Voice over IP -- Telephony
VoIP uses internet traffic to make phone calls.
If you are communicating between two computers, that is all
you need -- nothing but net.
If you want to call to the traditional telephone systems
- With VoIP there are many things happening.
- VoIP/SIP Phone Number
- Inbound Calls
- Outbound Calls
- Features
- Switching
- Internatinal
- You don't need to choose an all-in-one provider, such as Vonage,
to provision your IP Telephony service.
You could pick and choose between providers and make your
own solution.
- Many companies, such as Vonage, provide all-in-one solutions.
However, they often want things "their way" and you can't use
the
- For all my picking on Vonage, they are actually a really nice provider,
and provide and let you do many things other traditional telephony
VoIP providers just won't.
- XXXX find out about VoIP bandwidth versus call quality.
- Cisco IP Phones
- Vonage V Portal
- Vonage D-Link Router VWR-VD (Vonage Wireless Router - Vonage D-Link)
- Vonage V-Phone
- Skype Handsets
- USB Handsets
- magicJack
- XXX Asterisk PBX HW
- ATA -- Analogue Terminal Adapter (VOIP to/from DS0 phone) (other names too)
- CLEC -- Competitive Local Exchange Carrier
- ILEC -- Incumbent Local Exchange Carrier
- H.323 -- Evil ITU Telco style signalling protocol (SIP equivalent)
- H.264 ??? I think this is the low bandwidth video protocol.
- IAX -- Community Based SIP/H.323 equivalent. (Port 4569)
- Kbps -- Kilo bits per second
- KBps -- Kilo Bytes per second
- PSTN -- Public Switched Telephone Network
- SBP -- Session Border Controller
- SDP -- Session Description Protocol
- SIP -- Session Initiation Protocol
- SIP Trunking ???
- TDM -- Time Division Multiplexing
- Softphone -- software phone (aka compute running a phone program)
Telephone Lines
- DS0 -- 64 Kbps (a phone line)
- T1 -- 23 or 24 DS0s combined by TDM -- 1536 Kbps
- T3 -- 45 Mbps -- bunch bundled Ts
- ISDN -- Integrated Services Digital Network.
2 DS0 channels + 16 Kbps Signal Channel.
Extends switch operations into the home.
- DSL -- Digital Subscriber Line. Various types and bandwidths.
Bolo's Home Page
Last Modified:
Sat Feb 7 01:47:24 CST 2009
Bolo (Josef Burger)
<bolo@cs.wisc.edu>