| Feature Name | Comments |
| Automatic Identification Of Outward Dialing (AIOD) | Allows itemized billing of outward directly dialed and operator assisted long distance calls on a per line basis. This is an inherent feature. |
| Call Forwarding - Busy Line | Allows calls to be forwarded either inside or outside the Centrex system to a pre-selected number when the terminating line is busy. |
| Call Forwarding - Does Not Answer | Allows calls to be forwarded either inside or outside the Centrex system to a pre-selected number when the terminating station line is not answered after a predetermined number of rings. |
| Call Forwarding Variable | Allows all calls to be forwarded to a number of the user's choice either inside or outside the Centrex system. The feature includes reminder ring. |
| Call Hold | Enables a line user to place a call on hold for any length of time provided that neither party disconnects the call. |
| Call Pick-up Group(s) | Enables a line within a Centrex system Pick-up Group to answer incoming calls to another line within the Pick-up Group by dialing a code. One or more Call Pick-up Groups may be established. |
| Call Transfer | Allows a line user to transfer any established call to another line inside or outside the Centrex System. This feature utilizes the switchhook to put a caller on consultation hold (soft hold), and it also allows for 3-way conference calling. This is a required feature. |
| Three Way Calling | Allows a line user to establish a voice connection involving the user and two other parties. This is a required feature. |
| Direct Inward Dialing (DID) | Allows incoming calls from the local exchange and long distance network to reach an individual line or group of lines in the system without the assistance of an attendant. This is an inherent feature. |
| Direct Outward Dialing (DOD) | Permits lines of the system to gain access to the local exchange and long distance network without the assistance of an attendant. This is an inherent feature. |
| Hunting | Permits the routing of calls to an idle line in a prearranged group, when the called line is busy. When a call is placed to a busy number with series completion, hunting is done through the ordered list until an idle line is encountered or the end of the list is reached. Circular Hunting allows all lines in a hunt group to be tested for busy, regardless of the point of entry into the group. It continues to the last terminal in the group, then proceeds to the first terminal in the group and continues to hunt sequentially through the remaining lines in the group. Busy tone is returned if the called terminal is reached without finding one that is idle. |
| Touch Tone | Provides for the origination of calls by means of instruments equipped for tone-type address signaling over special central office facilities. This is a required feature. |
| Station to Station Calling | Enables individual line users in the Centrex system to directly dial other lines in the same system without the assistance of an attendant. This is an inherent feature. |
| Automatic Callback Calling | This feature allows the subscriber, after reaching a busy station within the Centrex Group, to hang up and dial an activation code to activate automatic callback. If the busy station goes on-hook and the calling station is on-hook, the calling station receives a distinctive ringing pattern. Upon answer, a call is automatically completed to the previously busy station. |
| Call Waiting Terminating | Enables an individual to receive an audible tone which indicates an incoming call is waiting from either inside or outside the Centrex system, if the called line is busy. This feature also includes Cancel Call Waiting, which permits a Call Waiting customer to inhibit the call waiting operation for one call through the use of a cancel call waiting code. |
| Directed Call Pickup Without Barge-In | Enables a line user to answer a call ringing on another line in the Centrex group by dialing a code. If the call has already been answered, the station user would receive a busy signal. |
| Directed Call Pickup With Barge-In | Enables a line user to answer a call ringing on another line in the Centrex group by dialing a code. If the called line has already been answered, the initiating line may barge in on the answered call and be connected to a three-way call. |
| Distinctive Ringing | Provides a unique ringing pattern, which enables an end user to distinguish between an intra-group and an inter-group call. |
| Speed Calling - Short List | Allows a station to call a pre-designated 7- or 10- digit number by dialing a code. Single digit speed calling allows the user to establish a list of 6 to 8 numbers. This list is controlled by the user. This feature can be provided either on an individual or shared basis. |
| Speed Calling - Long List | Allows a station to call a pre-designated 7- or 10-digit number by dialing a code. Two-digit speed calling allows the user to establish a list of 30 numbers. This list is controlled by the user. This feature can be provided either on an individual or shared basis. |
| Call Waiting Dial | Permits a station line to impose Call Waiting on a busy line by dialing the Call Waiting feature activation code, followed by the station number. This feature is an originating line feature that is applicable to intra-group calls only. |
| Call Park | Allows a station user to park a call against its own line number. The parked call can be retrieved from any station line in the Centrex group by dialing a feature code and the line number against which the call is parked. |
| Executive Busy Override | Allows a station user to bridge into a busy station line connection, preceded by a burst of alerting tone. |
| Authorization Codes | Used to identify callers on the Station Message Detail Recording (SMDR) record and assign a Network Class-of-Service (NCOS) and control network access. Authorization Codes can be used in conjunction with ARS Deluxe and SMDR. |
| Loudspeaker Paging Access | Allows station line users to access customer provided loudspeaker paging equipment by dialing an access code. |
| Meet-Me Conference | Provides a six-party conference bridge and line number for conferees to dial at a specified time to hold a conference. |
| Music On Hold | Provides a system wide music on hold capability. All calls placed on hold will be connected to a customer provided music source. |
| Music-On-Queue - Uniform Call Distribution (UCD) | Allows calls placed in an incoming UCD call queue to be connected to a customer provided music source after the call delay announcement. |
| Per Call Blocking | Permits a station line user to block the transmission of the Calling Line Identification information on a per call basis. |
| Anonymous Call Rejection | Permits a station line user to block the transmission of the Calling Line Identification information on a per call basis. |
| Six-Way Conference | Permits a station line user to establish a conference call consisting of more than three conferees (maximum six) without the assistance of the attendant. |
| Station Message Detail Recording (SMDR) - Magnetic Tape | Provides a record of calls originated by station line users or incoming tie line groups. Message details are provided on a magnetic tape, which is mailed to the customer on a monthly basis. |
| Station Message Detail Recording (SMDR)- To Premises | Provides a record of calls originated by station line users or incoming tie line groups. Message details are provided directly to the customer provided equipment, which collects and stores call data. |
| Tie Line Access | Allows a station user to gain access to tie lines and leased channels. |
| Uniform Call Distribution (UCD) | Allows for an even distribution of incoming calls over a group of stations called a UCD group. When all the answering agents are busy, the incoming calls are queued and the callers receive an audible ringback. When the delay interval exceeds the customer delay threshold, a recorded announcement advising of the delay may be provided. |
| Automatic Route Selection - Basic and Deluxe | Automatically selects the preferred route for network calls when a station user dials a pre-selected code. Basic: Deluxe: -
Expensive Route Warning Tone - Provides a warning tone to indicate the selection of an expensive route. -
Time of Day Routing - Allows for a cost-effective use of facilities by allowing or denying route choices based on time of day. -
A Facilities Restriction Level (FRL) can be provided on each Centrex line and tie line to determine both the type of call and the type of facility to be permitted over a tie line to a distant switching location. It identifies and carries the same restriction as those imposed at the originating point. |
| Customer System Administration | Allows the customer to access an administrative position associated within the customer group. It permits station and feature rearrangements and changes of ARS patterns. Feature Detail Customer System Administration (CSA) is an optional Centrex feature and is offered to customers where facilities permit. CSA allows customers to make certain changes in the Centrex line and feature arrangements on all lines in the system. Using CSA, the customer has the capability of changing or rearranging any Centrex standard feature. In addition, the customer has the capability of changing or rearranging only the following Centrex optional features: Attendant Related Features available with data link consoles, Authorization Codes, Automatic Route Selection - Basic and Deluxe, Electronic Telephone Service features, Six Way Conference, and Time of Day Network Class of Service Routing. |
| The customer can make these changes by accessing telephone company facilities through a customer provided dial-up data terminal. The customer may interchange the telephone numbers associated with Centrex lines within the customer's Centrex system. The customer can activate or deactivate service on all Centrex lines compatible with CSA. When a line is deactivated, it may be equipped to receive intercom calls. The customer may not originate a call on such a line. Monthly billing continues on those lines, which have been deactivated. A Telephone company service order is required to change the billing status of any line. |
| Last Number Redialed | Enables a station line user to redial the last called number by use of an access code rather than dialing the entire number. |