Basic Telephone Service

Centrex Service

The state has a very cost effective contract for telephone service which is known as "Centrex".  Centrex allows all state callers in the same locality to call other state offices in that locality by dialing only the last four digits of the telephone number. These calls are free and save the cost of local message units. Telecommunications can request that voice mail be provided on any state Centrex line.

State of Vermont Standard Centrex Features

4 digit dialing

In any town served by the Consolidated (formerly Fairpoint) Centrex system, you can call other state phone lines in their town’s Centrex by just dialing 4 digits; this allows users to call each other quicker and avoids local usage fees.

Distinctive Ringing

This feature is usually on all lines (must be removed for lines adding DSL). When your phone rings and the call is from your Centrex, you will hear 1 regular ring, pause, another regular ring. When someone calls you outside of your Centrex system, you will hear 2 short rings, pause, 2 short rings, etc.

Call Forwarding Variable

This allows you to have all calls to your phone number immediately forwarded to either to your voice mailbox or to another phone number. To activate, dial 72 (everywhere except in Burlington which is 52) and then dial the 4 digit number you want to forward your calls to, wait for the confirmation tone, then hang up. All calls will forward to that number until someone deactivates the call forwarding by dialing 73 (53 in Burlington) and wait for the confirmation tone, then hang up. When call forwarding is on you will hear a half ring on your phone for each incoming call to remind you that forwarding is on. There are 12 Centrex locations that have their voicemail served from a different Centrex, Barre for example has voicemail out of Montpelier. If you are a Barre person and want to forward your number to voicemail, you dial the 72 to active the feature, then dial the code 78 to get them to voicemail. Customers can only forward to numbers within their Centrex, if you need to forward to a phone number outside of the Centrex, they need Call Forward Private Facilities.

3-Way Conference Calling

This feature allows you to add a third person to the phone call you’re already on. Depending on your model phone you will need to press the Link, Flash or Conference button.  You will then get another dial tone.  Dial the number of the person to add on and press Link, Flash or Conference again to join all 3 of you together. To drop the last person added press Link, Flash or drop.

For conference calls with more than 3 participants see our web site at the following link to sign up for audio conferencing with the states’ contracted vendor Citrix.

ADS Customer Wireless Web Conferencing Signup

Call Transfer

This feature works the same way as 3 Way calling for analog Centrex lines (single line phones). After you Link the 2 callers together, you just hang up and they stay connected. For ISDN lines, you press Transfer, dial the number and press Transfer again.

Caller ID

Consolidated (formerly Fairpoint) no longer charges a separate fee for caller id and they are in the process of adding caller id on all state government phones lines alphabetically by town. This is already a standard feature on ISDN lines and includes the callers’ name if available. Caller id with name is not available on analog single line phone lines.

State of Vermont Optional Features (requires a telecom service request)

Call Pick Up group

This feature allows users in the same call pick up group to answer each other’s lines by hitting the * key.

Call Forwarding Over Private Facilities

This is a no-charge option, but you must submit a telecom request to have it added on your phone line. This feature allows you to forward your state phone line to a non-state phone line, such as your cell phone or home phone. Once it has been added on your phone line, you can forward your state phone line by dialing 72 (unless it’s a Burlington phone number you’re forwarding from, where you would instead dial 52), then 9 and the 7-digit local phone number, wait for the confirmation tone, then hang up. To cancel forwarding dial 73 and wait for the confirmation tone. If you forward your line to a phone number that is not a local call, your phone will be billed the toll charges of all calls that are forwarded to the non-local phone number. To forward to a non-local number, dial 72 (or 52 if in Burlington) then 9-1 and the 10-digit phone number (include the area code), and finally enter your long distance auth code, wait for the confirmation tone, then hang up. To cancel forwarding dial 73 (or 53 if in Burlington) and wait for the confirmation tone.

Uniform Call Distributor and Multi-Line Hunt Group

These services are used in call center environments where you have many people answering calls for the same agency from customers calling the same number. Agencies like State Parks, Tax, and DET use these features. It’s basically a group of ISDN or Centrex lines, in the same hunting group that answers the calls from the public. DET for example has 25 people in their call center in Montpelier. When the customer calls DET’s main number, it will forward that call to the next available person out of the 25 in the group to answer the call. Most of these are ISDN lines with a MAKEBUSY key on button 17 so if the employee has to step away from their desk, they can hit this key so no calls will come to their phone.

Call Park

only a couple of departments have this feature, institutions such as the Veterans Home in Bennington and the Department of Liquor Control. An incoming call is parked by dialing a special 2 digit access code. Then you page the person the call is for, advising they have a call on park. The person can go to any phone, dial the call park code and the call is connected.

Speed Dialing

This feature is available but most standard dsk phones have speed dialing buttons so most state offices use the phone's speed dialing buttons rather than the Consolidated (formerly Fairpoint) service. Speed dialing is available as a Centrex feature from Consolidated (formerly Fairpoint) as 1 digit dialing for 8 presets or 2-digit speed dialing for 30 preset speed dial numbers. These speed dialing codes can be shared among multiple phone lines in the same town or Centrex, typically the same office or department. One of the phone lines in the group is the controller and that line is where the speed dial codes are programmed.

Analog Phones

This type of phone is the most common standard-issue for most state employees answering a single line at their desk.  There are also analog phones capable of answering two, three and four lines if circumstances require this capability.

These are the user guides for the most common Analog phones in service throughout the state:

* Phones with an asterisk are ones we currently carry.

ISDN phones

These are commonly used at high volume attendant or receptionist positions where multiple line appearances are required. There are a number of different phones and user guides available.

These are the user guides for the ISDN phones currently available:

These are the blank templates (used to plan out what will be installed to the appearances/buttons):


These are commonly used at high volume attendant or receptionist positions where multiple line appearances are required. There are a number of different phones and user guides available.

These are the user guides for the headsets we have offered:

VoIP phones/Headsets

These are the phones that will be provided for lines as they convert to the new VoIP platform.

If you need more information about a specific phone set please contact ADS Telecommunications at 802-828-6620 or toll free 1-855-828-6620 - Option 2

133 State Street
Montpelier, VT 05633
(802) 828-4141

For Customer Support, please call 802-828-6620 or toll free 855-828-6620

  • ADS Service Desk/Telecommunications:   Option 1
  • Vision/HR Helpdesk: 802-828-6700: Option 2

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