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Acronym for Voice over IP

Known to be pronounced voy-oop (What will the marketing/sales people come up with next ?)
I strongly recommend using one those paper bags found in front of you when you are seated in a passager aircraft when you practice pronouncing this acronym.

The two major protocols used for VoIP are SIP and H.323. (They are completely different standards, not related to each other). SIP isn't so much a complete VoIP protocol - other protocols are required for the actual voice data transmission. See the SIP page for more details.

Cisco also deploy MGCP and Skinny? on their AVVID solution.

Free Linux/Win32 VoIP Client/Server

This client/server works for both Win32/Linux. It's a great PC to PC communication program.

Free SIP clients

Linux

Windows

Hardware Based VoIP Products

Cisco

Approved FWD Cisco SIP Clients

Server Software

Asterisk

GNUGK

http://www.openh323.org/ GnuGK and friends make up the openh323 project. GK is an h.323 gatekeeper (central server thing).

SIP Express Router

http://www.iptel.org/ser/

A more 'hardcore' SIP server. Less features, more commercial. SIP supports textual messaging, so SER has a Jabber gateway.

  • PCH runs this, (think INOC-DBA).
  • sipphone.com run this.
  • IPTel run this.

Microsoft Office Live Communications Server

http://www.microsoft.com/office/livecomm/prodinfo/default.mspx

SIP, H.323, etc. Nice and intergrated.

Free SIP Services

Free ENUM DNS services

E164 (E164.org) http://www.e164.org/

NOTES

Clients can be connected to more than one service at a time, think of it as having 2 seperate phone lines, both connected to different providers but both phones plugging into one unit.. so feel free to sign up for accounts at more than one service.. you can select which service you want when dialling away from the default service by starting to dial your numbers with #2 for the second account you have setup etc.

SIP is the new protocol used to initiate communication between various units, and it is a standard met by clients on Linux, windows, or on stand-alone VoIP phones. This means you can call any user on the network not caring what kind of hardware they are using, the SIP should help start a common conversation so you can talk to each other.

Simple trying out VoIP

Get yourself a client from the links listed at the top of this page, if you find any other clients please add them to this list, or if you want to point out problems or good points add them to this list also. install this client and set it up to work with a SIP service, I recommend FreeWorldDialUp simply because it was the first i tried and was simple enough to get going. set the options as the FreeWorldDialUp page suggests, using your password and login number (this login number is your phone number) and hopefully you will register to the network. take a look here for samples on how to setup your client http://pulver.com/fwd/quick/ FWD has some handy testing numbers to enable you to test that you can dial out correctly. so try these numbers to check your client is working correctly.

SIPPhone.com Test Numbers

To call the SIPphone number 474-5000, you would dial 474-5000 or 1-747-474-5000. (SIPphone welcome recording) To call the 800 number 800-555-1212, you would dial 1-800-555-1212. (800 directory service) To call the FWD number 55555, you would dial 1-393-55555.

Other Test Numbers

to dial other WLUG members check out SIPDirectory

To dial between networks

|From|To|Number |FWD|SIPPHONE|**then the sipphone number (ie **7474745000) |SIPPHONE|FWD|1-393-number |FWD|IConnectHere|**333number |IConnectHere|FWD|**393number |IPTel|FWD|**393number |FWD|Packet8|**8981number |Packet8|FWD|0351 5 digit# or 0451 6 digit# |FWD|Intertex|**468number |FWD|Netherlands Toll Free #s|*31(800).. |FWD|UK Toll Free #s|*44(800).. , *44(500).. , *44(808).. |FWD|US Toll Free #s|*1(8xx) xxx xxxx |FWD|French Free access (in test)|*33(800)..

You can find more FWD peering numbers here on FWD's site.