AT&T System 85 manual ROM cartridge, Color

ISDN 8503T Voice Terminal

ROM cartridge

A ROM cartridge is installed in each voice terminal, but is easily removed and replaced so that the firmware can always be updated. The cartridge can be removed from the bottom of the hous- ing by pressing the tab on the cartridge and then lifting it from the housing. The cartridge can be inserted into the housing by pressing the tab on the cartridge and then pressing it down into the bottom of the housing.

Mounting Options

The 8503T voice terminal comes equipped with a desk stand. However, the desk stand can be removed, and the voice terminal can be mounted on the wall.

Color

The 8503T voice terminal is available in AT&T black or AT&T white.

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