6Online help 93Create a Personal Directory 94Modify a Personal Directory 94Add names and telephone numbers 95Delete a character or single digit 95Cut or copy between Personal Directories 96Delete a directory entry 97Save or Export the Personal Directory file 97Program (download) the Personal Directory 98Handset option for the M3905 Call Center Telephone 98Installation of the cradle 100Alternate key caps for the M3905 100Full Duplex Handsfree (FDHF) Accessory on the M3904 101Prerequisites 102Operating parameters 102Status light indicator 103Meridian SL-100 configuration procedures 103Features firmware and software management 105Features and software 105System software 105M3900 telephone sets and accessories minimum firmware and releasenumbers 107Firmware download process overview 108Meridian SL-100 109M3900/EXPEC Firmware Manager 133Environmental, power, and safety considerations 139Temperature and humidity 139Power consumption 139Line engineering 140Accessory environmental information 140Meridian External Alerter and Recording Interface 140Accessory Connection Module 141Safety and electromagnetic compatibility 141Nortel Communication Server 2100M3900 Series Meridian Digital Telephones User GuideNN42200-110 09.01 Standard20 August 2008Copyright © 2008 Nortel Networks.