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Text File | 1999-01-28 | 16KB | 290 lines

No. 1/1A ESS Div. 3, Sec. 1z(3) Corporate Software Standards Draft Issue 3/12/90 CUSTOM LOCAL AREA SIGNALING SERVICES (CLASS) 1.0 INTRODUCTION 1.01 GENERAL INFORMATION AT&T developed a set of 1A ESS revenue generating features called LASS (Local Area Signaling Services). Pacific Bell requested customized software enhancements for some of the features, and will refer to them as CLASS (Custom Local Area Signaling Services). Documentation may refer to either acronym. The CLASS features allow increased customer control of phone calls. Existing customer lines can be used to provide call management and security services. The primary basis of CLASS is that the terminating office can obtain the identity of the calling party. Special terminating treatment based on the identity of the calling party can then be provided. The CLASS features are dependent upon an SS/CCS (Signaling System 7/Common Channel Signaling) network and use the SS7 Call Management Mode of operation. SS7 is the next generation signaling system that features flexible message formatting, high speed data transmission (56/64 kbps) and digital technology. CCS is defined as a private network for transporting signaling messages. In the existing voice and signaling network, signaling and voice use the same path but cannot use it at the same time. With SS7, signaling and voice have been separated. Signaling (SS7) is over a high-speed data link which carries signaling for more than one trunk. Refer to Corporate Software Standards, Division 3, Sections 1z(1) and 1z(2) for more information on SS7/CCS. In the initial deployment, the CLASS features will only work on intraLATA calls that are originated from and terminated to switches that are SS7 capable. Although CLASS features will be marketed and sold under the Commstar Custom Calling Feature label, the features will not be available for Centrex and Commstar II customers initially. However, like the other Commstar features, most of the CLASS services can be added to existing telephone equipment and will work on Touch Tone or Rotary sets. The Tracking Code (TC) for installation, translation and trunk work associated with CLASS is 299. All time spent on CLASS should be coded to the TC in order to ensure proper time reporting. 1.02 REASON FOR ISSUANCE This document is being issued in order to incorporate Methods and Procedures with Corporate Software Standards for the CLASS features. Subsequent changes to this document will be noted with a (>). 1.03 DESCRIPTION Seven features, plus Number ID Blocking, Screen List Editing, and Line History are available with the initial deployment of CLASS in the 1A ESS. Pacific Bell renamed the AT&T features; Bellcore has their own feature names. Documentation may refer to any of the names as noted below. Pacific Bell AT&T BELLCORE ------------ ---- -------- Call Block Selective Call Selective Call Rejection (SCR) Rejection Call Return Automatic Callback Auto Recall (AC) Call Trace Customer Originated Customer Originated Trace (COT) Trace Number ID Individual Calling Calling Number Line ID (ICLID) Delivery Number ID Privacy Calling Number Blocking Delivery Block Priority Distinctive Alerting Distinctive Ringing/ Ringing (DA) Call Waiting Repeat Automatic Recall Auto Callback Dialing (AR) Select Call Selective Call Selective Call Forwarding Forwarding (SCF) Forwarding NOTE: Bulk Calling Line ID (BCLID) will not be offered with the initial deployment of CLASS features. Following is a brief description of the CLASS features as well as Line History and Screen List Editing. CALL BLOCK The Call Block feature allows the customer to not receive, or block, calls from a pre-specified list of telephone numbers. The telephone numbers are placed on a Call Block Customer's Screening List. When the calling telephone number matches a number on the screening list, the calling party receives a rejection announcement. The customer blocking the calls (called number) does not receive any indication that a call was made. Activation Code: *60 Deactivation Code: *80 CALL RETURN When activated, the Call Return feature initiates a call to the last telephone number who called the subscriber. If the calling number is idle, the call completes immediately. If the calling number is busy, the request is queued until the line is idle or he request times out. This feature can be used to re-establish a previous incoming call, or to contact a party who called while the customer was unavailable. Activation Code: *69 Deactivation Code: *89 CALL TRACE Call Trace allows the called party to initialize an automatic trace of the last incoming call received. When the customer activates a trace, a message containing the following information is output to the SCC Maintenance Channel: 1. Time the trace was activated 2. DN of the calling party 3. MLHG/multiline indicator 4. DN and LEN of the customer requesting the trace 5. Date and time of the TTY message 6. Date and time the call being traced was received 7. Privacy Indicator 8. CWT Indicator Activation Code: *57 No Deactivation Code required LINE HISTORY Line History provides memory to store the Last Call Directory Number (LCDN), service routines to access the memory and logic to retrieve the LCDNs. Only the LCDN of the most recent originating and terminating call is saved. A permanent Line History Block is maintained for each line in a CLASS office. The LCDN is used in all CLASS features. NUMBER ID The Number ID feature enables the customer to identify the calling party before the call is answered. After the first ring, the calling party's DN is displayed on customer premises equipment (CPE). When the calling party's location is not CLASS equipped, or their telephone call is marked private, a code will be appear on the CPE display (e.g. '000-0000' or 'private' or 'out-of-area'); the display is up to the CPE vendor. No Activation/Deactivation Codes are required. NUMBER Number ID Blocking allows a customer to ID make their telephone number private on a BLOCKING per call basis by dialing an activation code prior to the called number. The term 'private' means that although the calling number is sent to the far end, it is marked private so that there will be no ICLID display of the number; the calling number can still be traced using Call Trace and can also be added to screen lists. This capability is available to all customers in a 1A ESS switch that has CLASS, whether or not they have the Number ID feature. Activation Code: *67 PRIORITY This feature provides a distinctive ring RINGING to the subscriber when incoming calls originate from telephone numbers pre-defined on a Priority Ringing List. When the customer with Priority Ringing receives a call and the calling number is on the list, the called party receives: Special ringing tone if the called number is idle, or If the called customer has Call Waiting and is on a call, they will receive a special tone indicating that a number on their Priority Ringing List is trying to reach them. Activation Code: *61 Deactivation Code: *81 REPEAT Upon activation, Repeat Dialing DIALING automatically redials the last otgoing call dialed from the subscriber's line. It does not matter whether the last call dialed from the customer's line was busy or idle, answered or unanswered. Repeat Dialing is available to POTS and multiline hunt customers as long as the ring back can be directed to a particular number on a unique LEN. If a call cannot be completed immediately due to a busy line, the customer receives a confirmation tone, the call is queued and recall completion is attempted when both parties are idle. The customer with Repeat Dialing receives ring-back ringing (2 short 1 long within six seconds) and upon answering the called party receives regular ringing. Once Repeat Dialing has been activated, the busy/idle status of the called and calling lines is checked every 45 seconds for 30 minutes. Activation Code: *66 Deactivation Code: *86 SCREEN LIST Screen List Editing allows subscribers to EDITING build and change the lists of telephone numbers associated with the Call Block, Select Call Forwarding and Priority Ringing CLASS features. When editing, the subscriber may also hear the entries on the list and obtain instructions. A screening list is activated when it is initially created during feature activation. When the screening list is active and has at least one number on it, the corresponding feature is on. An individual list of DNs is required for each feature that uses screening lists and is associated with the customer's line. SELECT CALL This feature automatically forwards FORWARDING incoming calls from telephone numbers that have been pre-defined on the subscriber's Select Forwarding List. Select Call Forwarding is totally independent from Call Forwarding Variable. Separate activations and 'forward to' numbers will be required. Both features may be activated simultaneously. Activation Code: *63 Deactivation Code: *83 NOTE: On Rotary sets, the '*' is replaced with '11' on all activation/deactivation codes.