The function of the private line eliminates the possibility of someone other than you reviewing your call details, from phone sets, which have the shared extension, additionally no one can monitor your call or connect to you call.
A brief intro on KOL TELECOM:
KOL TELECOM SERVICES LLC. is a USA-based and D&B registered provider of international wholesale as well as retail VOIP solutions. KOL TELECOM currently provides services to more than 100 international long distance carrie