SIP URI
From VoIP.ms Wiki
A SIP URI is the SIP addressing schema to call another person via SIP. In other words, a SIP URI is a user's SIP phone number. The SIP URI resembles an e-mail address and is written in the following format: x@y:port (x=Username, y=host|domain|IP)
Example: johnsmith@my-uri.com
There are 3 instances of use for SIP URI's, one is to send calls to an external SIP URI, via your DID number, second option is to receive calls via SIP URI, we can achieve this using our DID number or an internal extension from a sub account. The third option is to use a Virtual number.
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Send calls to a en external SIP URI address
You can route incoming calls to your DID numbers using a SIP URI address from other companies. You will need to create a string like youraccount@yourip to which you can route the DID(s).
Make sure the other company or provider supports the use of SIP URI
To make a SIP URI that can be used with multiple DIDs, use the {DID} tag. The {DID} expression will be replaced automatically by the DID number as it is listed in the "Manage DID section".
Example: 1{DID}@Your_IP_address = 12143221234@128.144.122.12
Dialing out a SIP URI or using a SIP URI as forwarding does not generate cost(Outgoing call).
Receiving incoming calls from a SIP URI
Using your DID number
You can receive SIP URI calls using the following format {Number}@sip.voip.ms, this can be used with your local US and Canada numbers, so they can be reached from outside.
Using your sub account internal extension
When you assign an internal extension for a sub account, it can also be used as an external SIP URI. For example, if your extension is 2, you could be reached directly via SIP from another network with a URI like this: 1000002@houston.voip.ms
(Replace houston.voip.ms by the server you are registered to, 100000 by your account ID and the 2 by your internal extension).
Using a Virtual number
Virtual SIP numbers are similar to standard DID numbers. The major difference is that virtual SIP numbers are not accessible via "PSTN". They can only be reached via "SIP URI" over internet. For example, if you have a DID number with another provider and they support SIP URI Forwarding, you could forward your number to a virtual number at voip.ms just like if it was one of our numbers.
All virtual numbers consist of the following digits: 11 + Accountcode + 3 digits of your choice for a total of 11 digits. The final uri will be that number followed by the @ sign at one of our server. If you intend to send the calls to a phone or adapter, you'll need to point it to the proper server.
Example SIP URI: 11100000123@houston.voip.ms
