Line Interface
From TBwiki
Line interface is a generic term for TDM physical interfaces. TelcoBridges products support 3 types of physical interfaces (available in 4 varieties of TDM module options):
In Toolpack each line interface contains at least 1 line service.
Example
For RJ48 TDM interfaces, configuring a connector as a T1 line interface will requires to add a T1 line service(see picture below).
For BNC connectors, configuring it as a DS3 line interface will requires to add a DS3 line service then add either up to 28 T1/J1 or up to 21 E1 line services(see picture below).