![](/images/new-backgrounds/1310228/31022827x1.webp)
974CIB_06 4/7/06 3:32 PM Page 11
Installation
If you are installing multiple phones in your telephone system, you must install and program one set at a time. If more than one extension is assigned the same extension number, a repeating short ring (error ring) sounds at the extension you are programming and the screen display includes EXTuXXuis alreadyuuseduAssignunewuEXTu#uif the phone is in idle mode. If the phone is in the programming mode, you will hear the repeating short ring only. Assign a different extension number from 11 to 26 (see Assign an extension number to your phone on page 24).
Battery installation
Install a 9V alkaline battery (purchased separately) in order to use some features of this telephone in the event of a power failure. If power fails and a working battery is installed, all four lines of this phone will work only to answer calls with the handset or headset, and to dial calls using the key pad and the one touch or redial features. No other features will work until power is restored.
1.Remove the wedge from the underside of the base unit. Press on the tabs in the direction of the arrows and pull the wedge away from the phone.
2.Remove the battery compartment screw with a small Phillips head screwdriver.
Installation
continued on page 12
11