FAQ - Technical Q & A
How should I dial calls?
For your convenience, we support 3 standards: 011 Prefix, 00 Prefix, and direct country code. For example, to call to UK you can use 01144 + number, 0044 + number, or 44 + number. To call to USA you can use 1 + Area Code + Number or 001 + Area code + number.
Do you offer termination in every country?
Yes, we do provide termination in every country. We are an A-to-Z VoIP termination provider. We always do our best to find and keep quality working routes. If you were to experience some problems with a particular destination, let us know and we'll make everything possible to fix the problem.
What are the supported codecs?
G.711 (μ-law/pcmu), G.729 and GSM.
What codec should I use?
For best sound quality, if you have the bandwidth available, we recommend G.711u. However, you can still maintain an excellent voice quality and lower bandwidth usage with codecs like G.729.
Codec Bandwidth Specifications
| Codec | Bit Rate | Nominal Ethernet Bandwidth (One Direction) |
| G.711u | 64 Kbps | 87.2 Kbps |
| G.729a | 8 Kbps | 31.2 Kbps |
| GSM | 13 Kbps | 29.2 Kbps |
What are the supported protocols?
We support SIP and IAX2.
What protocol should I use?
We recommend SIP. However, we fully support IAX2.
Does VoIPsvc.net offer alternative ports besides 5060?
Voipsvc.net offer alternative SIP ports, UDP 5080 and 42872. You can try those ports in case your ISP does block the SIP PORT 5060 UDP or if you need to use another one.
Can I register two different devices with the same account?
This is strongly not suggested, it can cause conflicts while routing the calls and can steal each other device's registration. If you need to register more than one device, please contact us and we will provide new credentials for any additional device.
What type of equipment is required?
Any type of software or device (unlocked) which support SIP or IAX2 including free softphones such as X-lite, free open source PBX Asterisk, Voxalot, Trixbox distribution, VoIP ATA's and VoIP phones, Hardware CISCO VoIP switches, etc. Basically, any hardware or software that support one of the 2 protocols.
Does VoIPsvc.net offer Distinctive Ring tones?
Distinctive ring tones are not available at the moment, if you are in a situation where you need to know which one of your DIDs is receiving a call, we will be able to help you by adding a specific Caller ID prefix to DID, different from the others.
Can I call an International Toll Free number?
At this moment calls to International Toll Free numbers are not supported. Only US and Canada toll free numbers are supported.
How do I port out my number?
If you have a DID number with VoIP.ms and wish to port it out to another provider, you need to always start this process on the new provider's side. They should be able to provide all the information required to start this process.
