Search Results for: Trunks
lines than extension lines, since it is unusual in most offices to have all extension lines in use for external calls at once. trunk lines transmit voice and data in formats such as analog, t , e , isdn , pri or sip . the dial tone lines for outgoing calls are called ddco (direct dial central office) trunks
lines than extension lines, since it is unusual in most offices to have all extension lines in use for external calls at once. trunk lines transmit voice and data in formats such as analog, t , e , isdn , pri or sip . the dial tone lines for outgoing calls are called ddco (direct dial central office) trunks...
https://en.wikipedia.org/wiki/Trunking