VoIP Q & A -- test the function of VoIP

How can I test the VoIP function with an existing PBX or key-press system?

There are multiple ways to use the existing PBX system or key-press system to test the VoIP function. How to test the function depends on your purpose.

If there are two sites connected with PBX connection lines, but you want to use VoIP so that you can send calls between internal networks without using expensive connection lines, in this case you can use the SIP to the PSTN gateway for testing such as MX25 http://www.zultys.com/MX25.htm )).

You can make the following configurations:

Existing PBX <-T1 PRI-> MX25 <-SIP-> MX25 <-T1 PRI-> existing PBX

Or you only have one site and want to keep the existing PBX and connect to a long-distance call through a network telephone service provider that provides a fast speed. In this case, you can configure the SIP-to-PSTN gateway in the following form:

Existing PBX <-T1 PRI-> MX25 <-SIP on the network> ITSP->

Or if you plan to replace the previous PBX and use an ip pbx such as MX250http: // www.zultys.com/MX250.htm), you need to test its function before disconnecting the service. In this case, the following configurations can be used:

Existing PBX <-T1 PRI-> MX250 <-T1 PRI-> PSTN

In this way, the existing PBX continues to use its previous functions, but the dial plan entry needs to send calls between systems. This allows specific employees to familiarize themselves with the new VoIP system and master its performance before switching the entire service.

1. Enterprise VoIP upgrade Guide
2. Five key points of VoIP in enterprise applications