The Cisco CCIE Service Provider (CCIE SP) certification validates expert level skills required of a Network Engineer to configure, build, troubleshoot, and optimize a complex highly available Service Provider IP NGN core infrastructure.
Dialed Number Identification Service. Dialed Number Identification Service (DNIS) is a service sold by telecommunications companies to corporate clients that lets them determine which telephone number was dialed by a customer. This is useful in determining how to answer an inbound call. The telephone company sends a DNIS number to the client phone system during the call setup. The DNIS number is typically 4 to 10 digits in length. Any DID (Direct inward dial) number will have a DNIS. This is the number sent from the central office to the PBX (Private branch exchange) or key system, telling the telephone system which number was dialed.
Geographic Terms and Concepts - Geographic Names Information System Identifier The Geographic Names Information System Identifier (GNIS ID) is a variable length, permanent, numeric identifier of up to ten digits in length that identifies each entity uniquely within the nation. The GNIS is the new American National Standards Institute (ANSI) national standard code for several entity types. Because each entity's GNIS ID is permanent, it will not change if the entity changes its name or if creation of a new entity changes the alphabetic sort.