PHONE SETUP
24 28xx CIP-D User Guide
Downloading Firmware from the
Cerato 20-20
This section is intended for System Administrators.
Do not make any changes to youre phone
without consulting System Administrator.
NOTE: Requires Cerato 20-20 switch software
release 4.3 or above.
If you have no other way to download firmware to
the phone, you can enable the Switch Download
feature to have the phone download new
firmware from the Cerato 20-20.
Note that this method takes considerably longer
than TFTP. You should disable the feature after
downloading firmware.
1. Press the Menu button.
2. Press DTMF digit 3 (Modify Settings).
3. Press DTMF digit 3 (Phone Settings).
4. Press DTMF digit 4 (Switch Dwld).
5. Use the right Navigation Key to select Enable.
Configuring the 2826 Phone
NOTE: This section is intended for System
Administrators. Do not make any changes to
youre phone without consulting System
Administrator.
Digital Interface Loop Limits
• Digital Interface Loop Limits
26 AWG - 500 m for Tip and Ring
• Digital Interface Power Requirements
2.5 W supplied by the switch
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