How Can I Use SIP Trunking?
Replacing a company's existing traditional telephone lines or T-1's from the phone company for SIP trunking is simple.
The first step is to determine if the company’s telephone system PBX is able to support this type of services directly or if an Internet Access Device (IAD) adapter needs to be utilize. Depending on the telephone system PBX, the SIP connectivity can be done in one of the manners outlined below.
- SIP Ready Telephone Systems: If a company's telephone system PBX is fairly new, it is very likely that is capable to support a SIP trunk connection directly. In this case, a network connection utilizing a patch cord is made between the PBX and the network switch, and SIP traffic telephone calls are routed in and out that way.
- Analog Trunk Telephone System: For telephone systems that require analog telephone lines, or trunks in order to receive telephone service, an Analog Terminal Adapter (ATA) is used. The ATA is installed between the telephone system and the internet connection, and it converts the SIP signal to analog telephone lines or trunks.
- T-1 PRI Telephone System: If a telephone system PBX is currently configured to use a T-1 PRI, a T-1 gateway IAD is utilize. The IAD converts the SIP trunk signal into a T-1 PRI, which is connects to the PBX in the same way as the phone company T-1, but it allows a company to have greater control over the number of T-1 channels needed and avoid expensive oversubscription.
Regardless of the type of SIP trunking connection being used, this technology allows companies to continue to use their existing telephone systems, while maintaining the same or better service and line quality that businesses expect, but at a fraction of the cost they are currently paying..