If your long distance usage is extremely expensive, you can probably save by using a T3 voice line. T3 voice lines give you reliable dedicated service with low rates for incoming toll free and outgoing phone calls.   One option amny people look into is an integrated T3 Line.  With an integrated T3, you can use part of the T3 for phone lines and the rest for data or internet access. In some cases, the savings in phone costs means you effectively obtain T3 Internet Access free.  

Also, the Local Loop is the flat fee for your connection to the telephone switch. There usually is an installation charge and a Monthly Recurring Charge (MRC). The MRC is in the $250 to $500 range has an actual function of geographic location relative to the carrier's T3 switch.

The Long Distance Usage is a separate charge in addition to the local loop. LDU rates for dedicated accounts are usually 10-40% less than regular switched long distance rates. Interstate rates have recently been in the 2 to 3 cent per minute range. 

Keep in mind that the last DS-0 channel is sometimes used to handle other applications, such as a connection with the local telephone network or routing to a hold queue until 1 of the 23 channels opens up. Call Centers are the most frequent users of PRI Voice Service. T3 PRI service leaves 23 channels available for voice calls. It is also helpful to know that frame Relay is for businesses requiring constant connectivity between 2 or more locations. Unlike Point-to-Point, you can select sub-T3 speeds between each satellite location and the main office.  This reduces cost and allows for future upgrades in speed on an as-needed basis.

Many people who do decide to opt for Integrated T3 service should know that it is just what the name implies: both voice and data traffic on the same T3. Since you have 24 channels to work with, you can divide up the load according to the business need. For example, a firm may allocate 8 DS-0 lines for Voice, and 16 DS-0 lines for Internet Access. In this example, the firm could handle 8 simultaneous calls while surfing the web at a speed of 1024 KBPS. Each supplier has specific numbers of channels that they can supply for voice on each T3. 

Also, if your organization requires constant connectivity to another office location, you should consider Point-to-Point T3 service. This is the same as regular T3 service, except now you have a Local Loop on two ends as opposed to just one. This increases the cost of the monthly recurring local loop charge.

DS3 service consists of 28 T3s giving a total bandwidth of 44.736 Mbps or a total of 672 voice channels. The monthly cost of a DS-3 Internet Access line typically ranges between $2,600 to $13,000 depending on your location.  Businesses with 12-24 phone lines typically rely heavily on DS3 voice service. With 24 DS-O circuits on one T-1 circuit, you can have 24 phone lines connected to the local or long distance carrier at the same time. Any number of the total 24 channels (circuits) can be set up as:

Outbound only - for 1+ dialing

800-inbound only - for incoming toll free calls

BI-directional - for both incoming and outgoing calls

You can have reliable high speed internet access by economical T3 data line service. T3 data line service gives quality, reliable high speed internet access. If you are considering cable and/or DSL and/or T3 internet service, read Comparison of Cable, DSL and T3 Internet Access.