The Avaya IPSI provides environmental maintenance and is the only IP server interface that is supported in the G650.
The IPSI is backward compatible, but only provides environmental maintenance when used in a G650. The TN2312BP IPSI always provides tone detection, call classification, tone generation, and clock functions.
Office Phone Shop allows you to buy the Avaya IPSI TN2312BP with confidence. All phones and parts come fully tested and with a full one year warranty.
We stock 1000s of telephone system parts and spares, and deliver them worldwide. Please quote part number TN2312BP when ordering.