Nortel Circuit Card Installation Manual page 612

Page 612 of 906
553-3001-211 Standard 3.00
NT8D14 Universal Trunk card
The class-of-service determines the operation of the switchable PADs
contained in each unit. They are assigned as follows:
• Transmission Compensated
— used for a two-wire non-VNL trunk facility with a loss of greater
than 2 dB for which impedance compensation is provided
— or used for a four-wire non-VNL facility
• Non-Transmission Compensated
— used for a two-wire non-VNL trunk facility with a loss of less than
2 dB
— or used when impedance compensation is not provided
August 2005