1. How long a truck driving school has been in business speaks volumes about their character. CDL schools pop up all the time in the form of small mom-and-pop operations with two trucks and a trailer for an office.These operations are interested in only one thing, taking your money.. The number should never be more than four students to every instructor in the truck. Anything higher than a 4-to-1 ratio means you wonât get the hands-on driving time and one-on-one instruction you need to become a skilled and competent driver.
A private caller is a person who has hidden or otherwise obfuscated their phone number. Oftentimes their number ends up showing up as âPrivate Callerâ, âRestrictedâ, âUnknown Caller IDâ or âNo Caller IDâ. Private Caller ID can only be unblocked when it is routed to a 1-800 number or an emergency hotline such as 911.
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.