E-MetroTel supports the following Avaya digital phone. Any mix of Avaya digital telephones can use the same DSM16:
Avaya IP Office 9.1 SP12 - Phone Application Release / Boot Firmware
Avaya IP Office 11.1 SP4 - Phone Application Release / Boot Firmware
These models are supported on any of our existing DSM16p cards after the application of a software update to both the DSM16p card and the UCX software. The DSM16p software includes a new Digital Set Mode to the Gateway / Device Configuration page to enable the card to support a full complement of a maximum of 16 Avaya digital phones. All Avaya Digital Telephones work using the DSM16 Digital Set Mode = Avaya.
Note that while a single DSM16p can only support one Digital Set Mode; multiple digital set types (Norstar/BCM, M1/CS1000, Panasonic, Avaya) can be supported using multiple DSM16p cards connected to a single UCX based system.
Please refer to the SIP Phone section: https://www.emetrotel.com/tsd/main-categories/avaya