| Company |
PC to Phone |
Phone to Phone |
Phone to PC |
Video Support |
Software Phone (Softphone) |
Hardware IP Phone |
Hardware Phone Adapter |
Phone Numbers |
Market |
 |
1TouchTone |
 |
 |
|
|
|
|
|
US |
USA |
 |
AT&T |
|
|
|
|
|
|
|
US |
USA |
 |
BroadVoice |
|
|
|
|
|
|
|
US |
USA |
 |
calleveryone |
|
|
|
|
|
|
|
US |
USA |
 |
EarthLink |
|
|
|
|
|
|
|
US |
USA |
 |
Encounta |
|
|
|
|
|
|
|
virtual |
Australia |
 |
Fastweb |
|
|
|
|
|
|
|
IT |
Italy |
 |
GalaxyVoice |
|
|
|
|
|
|
|
US |
USA |
 |
Howdy Corp. |
|
|
|
|
|
|
|
virtual |
World-Wide |
 |
IP Connection |
|
|
|
|
|
|
|
virtual |
USA |
 |
Lingo |
|
|
|
|
|
|
|
AR, AU, BR, CA, FR, GT, HK, IT, JP, KR, PR, TW, UK, US |
USA |
 |
NuFone Network |
|
|
|
|
|
|
|
virtual |
USA |
 |
Packet8 |
|
|
|
|
|
|
|
US |
USA |
 |
SIP Phone |
|
|
|
|
|
|
|
virtual |
USA |
 |
Skype |
|
|
|
|
|
|
|
virtual |
World-Wide |
 |
Time Warner Cable |
|
|
|
|
|
|
|
US |
USA |
 |
USA Datanet |
|
|
|
|
|
|
|
US |
USA |
 |
Verizon |
|
|
|
|
|
|
|
US |
USA |
 |
VoicePulse |
|
|
|
|
|
|
|
US |
USA |
 |
Vonage |
|
|
|
|
|
|
|
CA, MX, UK, US |
USA, Canada |
| NOTE: |
The "phone numbers" represents the areas wherein the service provider allows the subscriber to be assigned a phone number, independent of the subscriber's physical location. The codes are presented using  ISO country code values. |
| NOTE: |
The "virtual" phone numbers indicates that the service provider does not provide a means of allowing callers from outside the service providers network to the customer. Customers may be able to call each other within the service, but you will not be given a phone number that outside callers can use to reach you. |
以上Source 來源 Packetizer, Inc. http://www.packetizer.com/voip/sp/
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