T1 phone pri or Primary Rate Interface is a specialized telecommunication service within the Integrated Services Digital Network or ISDN. It is used for transmitting multiple voice and data signals through multiple DSOs. T1 phone pri provides faster and high quality voice and data processes, which are of particular use to business houses.
In a simple T1 line, there are 24 digitized channels which are used for transmitting data and voice signals simultaneously. A T1 phone pri contains 23 digitized channels or DSOs instead of 24. In this, voice and data processes are transmitted through the 23 channels, while the 24th channel is used for sending signals. In a pri line, the 23 channels are used as data or voice channels, while the 24th one is used as a data channel or signaling channel for serving the 23 digitized channels. In other words when a call goes through or an internet connection is made, all the dialing and connection information is transmitted through this 24th channel, and not through the 23 voice channels as touch tones. By using a totally separate channel for signal transmission, call connection and disconnection becomes faster and easier. As the 23 channels are exclusively used for sending and receiving voice calls and data processes, the calls become much faster and have a greater clarity. While the phone calls go through the 23 channels, the ANI information and caller ID are received through the data channel. This information then shows on the display unit, providing the receiver with the caller’s details.
Through a T1 phone pri, you can:
• Enable the transmission of high speed, digital data and voice processes through existing infrastructure, resulting in high productivity.
• Reduce total trunks required and allocate channels to adjust to changing patterns of traffic.
• Reduce call connection and disconnection time by 90%, use advanced features to support applications and also extend an existing PBX system’s value and life.
• Connect multiple locations with two-way bandwidth capable of carrying data and voice processes via the PSTN.
• Enjoy superior quality of transmission, get instantaneous connection and use it to transmit huge amount of data.
• Implement a disaster back-up/recovery solution at reasonable cost.
Apart from the usual features, a T1 phone pri provides a number of additional features like:
Call by call service – By setting limits for every type of traffic like DID, DOD, toll free, data, it prioritizes call demand.
Call line ID – It matches call information with stored databases and even blocks calls if necessary.
Out of band signaling – By handling the signaling through a separate data channel, it helps the 23 channels to carry more traffic.
64 kbps clear channel – By dedicating the digitalized channels for only voice or data transmission, it improves the quality of call.
