Intertex develops and markets hardware products - SIP capable firewalls. We do not provide any VoIP services. The Intertex Internet Gate can provide you with global SIP connectivity for free. Combine the Internet Gate with VoIP services from different providers to get full PSTN connectivity!
The Intertex Internet Gate is very flexible, enabling you to connect to the PSTN using ITSP's (Internet Telephony Service Providers) in different ways. With our products together with ITSP services you can setup dialplans, do least cost routing, setup virtual foreign offices etc. Below (right column) you’ll find two examples explaining how the Internet Gate can be used, and (left column) a guide showing you how to get PSTN connectivity.
PSTN connectivity with the SIP Switch software addition
With the SIP Switch you can do least cost routing, setup short extension no., dialplans, voice mail services and more. You can use one single ITSP account for all of your phone calls or use multiple, e.g. the cheapest/best ITSP account in specific areas or contries.
Before getting into details, a brief description of what you need. What you must have is the (1) Intertex Internet Gate with the (2) SIP Switch software addition installed, (3) one or several SIP phones and/or SIP clients (examples of SIP phones/clients) and (4) one or several ITSP accounts (here is a list of ITSP's).
When setting up PSTN connectivity using the SIP Switch it is important to note that:
(1) It is the SIP Switch that (pretends to be a SIP client and) registers on the ITSP account, and (2) the SIP phone/client you wish to use, registers on the Internet Gate (not the ITSP account).
The steps you need to take to get PSTN connectivity with the SIP Switch.
Example 1: The international company
IntVentures Ltd. has its head office in Germany and two sales offices, one in Japan and one in United States. They market and sell a product all over the world. To lower costs and increase flexibility, they purchased three copies of the Intertex Internet Gate, one SIP Switch software addition license and some SIP phones from a different vendor.
Internal communication: telephone calls, video conferencing, instant messaging, precence and document sharing carried over the internet för free. All employees are reached on a short extension no.
External communication: IntVentures Ltd. has a number of ITSP accounts in the world., enabling least cost routing. E.g. when German support personell call customers in Japan, the call is routed to a Japanese ITSP account.
An investment in the Internet Gate, the SIP Switch and SIP telephones enables companies such as IntVentures Ltd. to save up to 80% on phone bills, to easen employee flexibility and increase customer services.
PSTN connectivity without the SIP Switch software
With the Intertex Internet Gate you can easily get PSTN connectivity. Just connect your SIP software clients or hardware phones to your Internet Gate, sign up for an ITSP account and start calling your friends connected to the plain old telephone system.
You need the (1) Intertex Internet Gate, (2) one or several SIP phones and/or SIP clients (examples of SIP phones/clients) and (3) one ITSP account (here is a list of ITSP's).
When setting up a ITSP account without the SIP Switch software addition, simply enter the ITSP account information in all of your SIP phones/clients. Your SIP phone/client will then register directly on the ITSP's SIP server. The Internet Gate simply forward all SIP traffic.
(i) Using a stand SIP phone/client
(ii) Using analog phone connected to the FXS port (Internet Gate GW model)
The steps you need to take to get PSTN connectivity without the SIP Switch.
| Example 2: The small company
A three-man company called Sales Ltd. based in Sweden invest in an Internet Gate from Intertex, a broadband account and some SIP phones from different vendors. They now want to be able to call their Swedish customers on the PSTN. They search the Intertex list of recommended ITSP’s and decide to use ExampleSIP since they are well recommended. They sign up for an account with ExampleSIP at their web page and receive (1) a the telephone no. (2) a sip contact address and (3) user name and password. Sales Ltd. connects their computers and SIP phones to the Internet Gate. They enter the information received from ExampleSIP in all three SIP phones and can start making and receiving calls on the telephone no. they obtained from ExampleSIP. By using the ITSP instead of a traditional PSTN operator, companies such as SalesLtd. can reduce its monthly telephone bills by up to 40%.