The BOTTOM VIEW includes the following:

15) Battery compartment

You may place two 1.5-Volt AA batteries in this compartment in case of power outage.

16) Tone/Pulse switch

This switch us used to select the dialing mode, either TONE (DTMF) or PULSE (Decadic). The correct mode depends on the telephone network.

17) Ringer volume switch

The settings on this switch affects the ringer volume during an incoming call. There are three available ringer volume positions: Low, Medium, and High.

18) Ringer pitch control

The pitch of the ringing sound can be changed by rotating this control on the bottom of the telephone.

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Image 13
Avaya 9103 manual Battery compartment, Tone/Pulse switch, Ringer volume switch, Ringer pitch control