A nonstandard situation in which special arrangements are required to satisfy unusual requirements. General tariffs do not apply. This portion of the signaling system manages the telephone call, including calling party number information, call status checking, trunk management, system messaging. Long-haul long distance carriers. The term generally applies to voice and data carriers, but not to Internet carriers.
Carriers use the LERG in the network design process.
A nationally linked network of valid telephone and calling card numbers offering such services as Calling Card Validation, Billing Number Screening, and Public Telephone Check. A letter that you give to someone whom you allow to represent you and act on your behalf. For example, a letter of agency is used when your interconnect company orders lines from your local phone company on your behalf. Load Coils Used to lessen the effects of bridge taps in a wire pair when used in a voice application. The geographic area that telephones may call without incurring toll charges.