Nortel Networks M3820 User Manual

Page of 264
Digital Telephone IP Adapter Installation and Administration Guide
143
January 2005 
Using the digital telephone 
What controls the online and offline modes
The online and offline modes can be controlled by one or both of the following:
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online/offline schedule configured for your site on the RLC at the host PBX
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special prefix (SPRE) codes configured on the Digital Telephone IP 
Adapter unit at your site