Nortel Networks 555-4001-135 User Manual

This equipment has been tested and found to comply with the limits for 
a Class A digital device pursuant to Part 15 of the FCC Rules, and the 
radio interference regulations of the Canadian Department of 
Communications. These limits are designed to provide reasonable 
protection against harmful interference when the equipment is operated 
in a commercial environment. This equipment generates, uses, and can 
radiate radio frequency energy and, if not installed and used in 
accordance with the instruction manual, may cause harmful 
interference to radio communications. Operation of this equipment in a 
residential area is likely to cause harmful interference in which case the 
user will be required to correct the interference at the user’s own 
expense. Allowing this equipment to be operated in such a manner as 
to not provide for proper answer supervision is a violation of Part 68 of 
the FCC Rules, Docket No. 89-114, 55FR46066.  

The ICB MTBF will be better than 50 years for ground benign (GB) and 
40

° C ambient. 

AS/NZS 3548l

EMC (Australia/New Zealand)

NFC 98020

France EMC standard