Modern technology brings a lot of innovation in lines of business processing, marketing and telecommunication. With the use of digital voice trunk which refers to T1, it can accommodate up to 24 telephone lines or trunks. Accessibility is highly obtained as it consolidates the needs for separate local trunks and lines.
In business operations, you should consider a T1, especially when the business requires at least 18 or more voice-grade channels for local or long distance calls. Acquiring T1 is good shot when your business approximately does a $1000.00 per month in local and long distance calls. T1 offers major economic advantages over alternative means of access and it is most cost effective when utilization is heavy or near full capacity for extended times.
Transporting traffic between the parties end user may be what local trunk groups do. Basically, there are two groups of local trunks based on how they transport traffic between parties involved. T1 can either operate as a one-way trunk or two-way trunk.
Ancillary services such as OPS/DA, mass calling and 911 can be established between a CLEC Tandem or End Office switch and an SBC- 13STATE Tandem through a one–way trunk group. They will utilize Signaling System 7 (SS7) or multifrequency (MF) signaling protocol, with SS7 signaling preferred whenever possible. CLEC will have administrative control of one-way trunk groups from CLEC to SBC-
13STATE (CLEC originating).
Group of two-way trunk for local, IntraLATA and InterLATA can be established between a CLEC switch and an SBC-13STATE Tandem or End Office switch. This group will utilize Signaling System 7 (SS7) or multi-frequency (MF) signaling protocol, with SS7 signaling preferred whenever possible. CLEC will have control for the purpose of issuing Access Service Requests (ASRs) on two-way for administrative consistency. 2-Way Local Trunk features free Local Calling, DID, E911 & Directory Listing.

