Cisco PenTeleData 8800 Series Administration Guide

To reduce or eliminate any adverse effects to the phones, schedule administrative network tasks during a time
when the phones are not being used or exclude the phones from testing.
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
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Cisco IP Phone Troubleshooting
Phone Behavior During Times of Network Congestion

Cisco PenTeleData 8800 Series Specifications

General

Brand	Cisco
Model	PenTeleData 8800 Series
Category	IP Phone
Language	English