Nortel 1110 用户指南

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页码 632
Page 492 of 630
 Expansion Module for IP Phone 1100 series
553-3001-368 Standard 26.00 August 2007
Firmware
The Expansion Module uses a TFTP or UFTP Server to upgrade the 
firmware. The firmware is downloaded to the IP Phone, which is then 
distributed to the each attached Expansion Module, one at a time. After the 
Expansion Module confirms to the IP Phone that the firmware file is 
downloaded and saved successfully, the IP Phone starts the download to the 
next attached Expansion Module.
If any error causes the firmware download to fail, or if the saved firmware file 
is corrupted, the Expansion Module reverts to the factory installed firmware. 
The factory installed firmware file is always available to facilitate firmware 
download in case the downloaded firmware is unusable. 
For more information about TFTP Server firmware upgrade, see 
Appendix Appendix H:: “TFTP Server” on 
For more information about Expansion Module, see the Expansion Module 
for IP Phones 1100 Series User Guide (NN43130-101)
.