1.1 Incoming Call Features
1.1.1 Incoming CO Line Call Features
1.1.1.1 Incoming CO Line Call Features–OVERVIEW
Each CO line functions as either a public line or a private line. Private lines are used to connect different PBXs and form a private network ( 1.26.1 TIE Line Service), while public lines connect a PBX to a public network, i.e., the telephone company. Certain PBX features are available depending on the networking type (public or private) of each CO line.
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| 1. | Networking Type Used by Each CO Line |
| | Each CO line port (channel) of a CO line card is assigned a port (channel) type which determines the CO line's networking type–public or private. | |
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| 2. | Distribution Method |
| | Each public CO line port (channel) can use a different method of directing calls to their destinations as they are received. | Distribution Method | Description | Details in |
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| | Directs a call to a preprogrammed destination, such as an operator, based on the CO line carrying the call. |
| | | Direct Inward Dialing (DID) |
| | Directs a call received on a DID line to a preprogrammed destination based on the telephone number dialed by the caller. |
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| | Calling Line Identification (CLI) distribution is the most customizable call distribution method available. It allows calls from specific people to be directed to specific destinations, based on the callers' telephone numbers. CLI distribution, when enabled for the current time mode, takes precedence over DIL or DID distribution. | Feature | Description | Details in |
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| Calling Line Identification (CLI) Distribution |
| | Directs a call to its preprogrammed destination if the caller's telephone number and its CLI destination has been stored in the System Speed Dialing Table. |
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| 3. | Available Distribution Method for Public CO Lines |
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| 4. | Available Destination |
| | The following destination types can be programmed as DIL, DID, or CLI destinations. | Destination Type | Availability |
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| Wired Extension (PT/SLT/T1-OPX) |
| | | | | | | | | | | | | | | Analog/ISDN Remote Maintenance |
| | | Idle Line Access no. + Phone no. |
| | CO Line Group Access no. + CO Line Group no. +
Phone no. |
| | | Extension of Another PBX (via TIE Line, Access with PBX Code) |
| | | Extension of Another PBX (via TIE Line, Access without PBX Code) |
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| 5. | Intercept Routing |
| | After a call has been directed to its DIL, DID, or CLI destination, the following Intercept Routing features, if programmed, can redirect the call. | Type | Description | Details in |
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| | If a called party does not answer a call within a preprogrammed time period (Intercept time), the call is redirected to a preprogrammed destination. |
| | | | If a called party is already handling another call, the new call is redirected to a preprogrammed destination. |
| | | If a called party is in Do Not Disturb (DND) mode, the call is redirected to a preprogrammed destination. |
| | | If a destination is not assigned, the call is redirected to an operator. |
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1.1.1.2 Direct In Line (DIL)
Directs an incoming public CO line call to a preprogrammed destination based on the CO line carrying the call. Each CO line has a destination for each time mode.
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| [Method Flowchart] |
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| [Programming Example: DIL Table] |
| The table can be programmed for each CO line. |
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| In this example: |
If a CO line call is received on CO line 01:
In day mode: Calling Line Identification (CLI) distribution is enabled. The call is routed to its CLI destination, if assigned. If not assigned, the call is routed to the Direct In Line (DIL) destination, extension 101.
In lunch mode: CLI distribution is disabled. The call is routed to the DIL destination, extension 100. |
Note | | Tenant numbers and VPS trunk (CO line) group numbers (not shown here) can also be programmed in the DIL Table.
The tenant number programmed here is used only to determine the Time Table used by each CO line; selecting tenant 3 means the CO line will use Time Table 3, for example. The VPS trunk (CO line) group number set here is used to determine the Incoming Call Service and greeting message used by the Voice Processing System (VPS) during the current time mode. ( 1.21.2 Voice Mail DPT (Digital) Integration). |
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| • | To use this feature, DIL must be assigned as the distribution method for the desired CO line port. |
1.1.1.3 Direct Inward Dialing (DID)
Directs a call on a public CO line assigned as a Direct Inward Dialing (DID) line to a preprogrammed destination according to the call's DID number, which is based on the telephone number dialed by the caller. When a call reaches its destination via DID distribution, the DID name will be displayed on the proprietary telephone (PT), allowing extension users to easily see whom a call is directed to. Each DID number has a destination for each time mode.
DID distribution allows you to use your telephone numbers for specific purposes. For example, you can direct calls from customers' fax machines to your office fax machine automatically, or allow your overseas customers to be automatically connected to specific operators.
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| [Method Flowchart] |
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| [Programming Example: DID Table] |
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| In this example: |
| If the DID number is "123-4567": |
| 1) | The PBX looks for the DID number in the table and finds it in location 1. | | 2) | The PBX checks the time mode. | | In day mode: Calling Line Identification (CLI) distribution is enabled. The call is routed to its CLI destination, if assigned. If not assigned, the call is routed to the DID destination, extension 105, and "Sales" is displayed.
In lunch mode: CLI distribution is disabled. The call is routed to the DID destination, extension 100, and "Sales" is displayed. |
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Note | | Tenant numbers and VPS trunk (CO line) group numbers (not shown here) can also be programmed in the DID Table.
The tenant number programmed here is used only to determine the Time Table used by each DID number; selecting tenant 3 means the DID number will use Time Table 3, for example. The VPS trunk (CO line) group number set here is used to determine the Incoming Call Service and greeting message used by the Voice Processing System (VPS) during the current time mode. ( 1.21.2 Voice Mail DPT (Digital) Integration). |
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| • | To use this feature, DID must be assigned as the distribution method for the desired CO line port. |
1.1.1.4 Calling Line Identification (CLI) Distribution
Directs an incoming CO line call to a specific destination when the caller's telephone number matches a number in the System Speed Dialing Table. Each telephone number in this table can be assigned its own Calling Line Identification (CLI) destination.
CLI distribution allows you to direct calls from specific people to specific destinations, and has many applications. For example, you can program the PBX to automatically connect calls from priority clients to their sales representatives, or automatically connect mobile phone calls from an executive to his or her assistant.
In order for CLI distribution to function, the PBX must receive Caller ID information from the telephone company.
CLI distribution works in conjunction with both Direct In Line (DIL) and Direct Inward Dialing (DID) distribution; it can be enabled or disabled for each CO line (for DIL) and for each DID number, for each time mode.
When a call has Caller ID information and CLI distribution is enabled for the current time mode, CLI distribution will direct the call to its destination, ignoring preprogrammed DIL or DID destinations. |
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| [Programming Example: System Speed Dialing Table] |
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| In this example: |
| If the caller's telephone number is "1-212-555-1234": |
| 1) | The PBX looks for the number in the System Speed Dialing Table. (The CO Line Access number, "9", is disregarded.) The number is found in location 000. | | 2) | If CLI distribution is enabled in the current time mode for the DID number or for the CO line carrying the call (for DIL distribution), the call is routed to its CLI destination, extension 200. |
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| • | If Automatic Caller ID Modification is used:
Store the modified number in the System Speed Dialing Table. |
1.1.1.5 Intercept Routing
| Redirects an incoming CO line call to a preprogrammed destination when the original destination does not, or can not, answer the call. There are four types of Intercept Routing, described below. |
Type | Description |
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| | If a called party does not answer a call within a preprogrammed time period ( Intercept Time [203]), the call is redirected to a preprogrammed intercept destination. |
| | | If a called party is already handling a call, new calls are redirected to a preprogrammed intercept destination. |
| | | If a called party is in Do Not Disturb (DND) mode, the call is redirected to a preprogrammed intercept destination. |
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| Intercept Routing redirects calls to destinations based on the original destination of the call, as shown in the table below. Different intercept destinations can be programmed for each time mode. Note that calls redirected by Intercept Routing–No Answer/Busy/DND are directed to the same destination, and that the intercept destination for Intercept Routing–No Destination is always an operator. |
When the original destination is: | The Available Intercept Destination is: |
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| • | Wired Extension (PT/SLT/T1-OPX) | | • | PS |
| | | | | • | PS Ring Group | | • | VM Group (DTMF/DPT) | | • | External Pager (TAFAS) |
| | | | | • | Analog/ISDN Remote Maintenance | | • | Idle Line Access no. + Phone no. | | • | CO Line Group Access no. + CO Line Group no. + Phone no. | | • | Other PBX Extension (TIE with no PBX Code) | | • | Other PBX Extension (TIE with PBX Code) |
| | Not assignable (Intercept Routing is not available.) |
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| | Intercept Routing will redirect a call only if the Direct Inward System Access (DISA) line is busy. Once a call reaches the destination extension using the DISA feature, the call can be redirected to the Intercept Routing destination assigned to that extension. |
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| [Available Intercept Destination] |
| The following can be used as intercept destinations: |
Intercept Destination | Availability |
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| Wired Extension (PT/SLT/T1-OPX) |
| | | | | | | | | | | | | | | Analog/ISDN Remote Maintenance |
| | | Idle Line Access no. + Phone no. |
| | CO Line Group Access no. + CO Line Group no. +
Phone no. |
| | | Extension of Another PBX (via TIE Line, Access with PBX Code) |
| | | Extension of Another PBX (via TIE Line, Access without PBX Code) |
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| • | If the intercept destination is busy or in DND mode and therefore cannot receive the call: |
| | a) | When the call was intercepted via Intercept Routing–No Answer, the call is sent back to the original destination and continues to ring at the original destination until answered. | | b) | When the call was intercepted via Intercept Routing–Busy and arrived through an LCOT or T1 (LCOT/GCOT) card, the call waits at the original destination. If the extension has Call Waiting activated, the user will hear a call waiting tone. When the call arrived on any other card, the caller hears a busy tone. | | c) | When the call was intercepted via Intercept Routing–DND and arrived through an LCOT or T1 (LCOT/GCOT) card, the call waits at the original destination and it rings. When the call arrived through any other card, the caller hears a busy tone. |
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| • | If the intercept destination can, but does not, answer the call:
The call continues to ring at the intercept destination until answered. |
| • | Intercept Routing–Busy/DND on/off
Intercept Routing–Busy and Intercept Routing–DND can each be enabled or disabled for the entire system, through system programming. If enabled, calls will be routed to the appropriate destination.
If disabled, a call to an extension which is busy or in DND mode will be handled as described below, depending on the type of CO line card carrying the call. |
| | a) | LCOT or T1 (LCOT/GCOT) Card: The caller will hear a ringback tone. If busy, the extension will not ring. If in DND mode, the extension will ring. | | b) | All Other CO Line Cards: The caller will hear a busy tone. |
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1.1.1.6 Intercept Routing–No Destination
| Directs a CO line call to an operator when the call has no assigned destination. |
| • | Intercept Routing–No Destination on/off
Intercept Routing–No Destination can be enabled or disabled for the entire system, through system programming. If disabled, the caller will hear a reorder tone if the call has no destination.
Note that calls received through an LCOT or T1 (LCOT/GCOT) card will always be directed to an operator, even when this feature is disabled. |
| • | If an operator is not assigned:
The default intercept destination will be the extension connected to the lowest numbered port, on the card installed in the lowest numbered slot. |
| • | Intercept Routing–No Destination also applies to calls from doorphones. |
1.1.2 Internal Call Features
1.1.2.1 Internal Call Features–OVERVIEW
| There are two types of internal calls, described below. |
Feature | Description | Details in |
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| | A call from one extension to another. |
| | | | A call made from a doorphone to its preprogrammed destination, assigned to the doorphone's port, for the current time mode. ( 2.2.4 Time Service) |
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| [Available Destination] |
| The following destinations can be called internally. |
Destination | When calling from |
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Extension | Doorphone |
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| Wired Extension (PT/SLT/T1-OPX) |
| | | | | | | | | | | | | | | | | | | | | | Analog/ISDN Remote Maintenance |
| | | | Idle Line Access no. + Phone no. |
| | | CO Line Group Access no. + CO Line Group no. +
Phone no. |
| | | | Extension of Another PBX (via TIE Line, Access with PBX Code) |
| | | | Extension of Another PBX (via TIE Line, Access without PBX Code) |
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1.1.2.2 Internal Call Block
Internal calls can be restricted based on the Class of Service (COS) assigned to the caller and to the called party.
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| [Programming Example: Internal Call Block] |
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| In this example: |
| a) | COS 1 can make calls to all extensions. | | b) | COS 2 can make calls to COS 1 only. (COS 2 cannot make calls to COS 2.) | | c) | COS 3 can make calls to COS 3 only. |
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| • | Internal Call Block also prohibits certain features, such as Walking Extension and Walking COS, from being performed between certain extensions. |
| • | Any extension can make an Operator Call regardless of the Internal Call Block setting of its COS. ( 2.2.5 Operator Features) |
| • | Because each doorphone port is assigned a COS, the Internal Call Block feature can restrict certain extensions from calling certain doorphones. ( 1.15.1 Doorphone Call) |
1.1.3 Incoming Call Indication Features
1.1.3.1 Incoming Call Indication Features–OVERVIEW
| Extension telephones can indicate an incoming call in various ways, described below. |
Indication Type | Feature | Description | Details in |
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| | Ring Tone Pattern Selection |
| | A telephone rings when receiving a call. A different ring tone pattern can be assigned to each incoming call type. |
| | | | Alternate Receiving–Ring/Voice |
| | Proprietary telephone (PT) users can choose how their telephones receive intercom calls, by selecting to hear ring tones or the caller's voice. |
| | | | | The LED indicator on a PT can indicate the status of different lines using light patterns and colors. |
| | | Display (Caller Information) |
| | | A user's PT can show a variety of information on the display, such as the line number, the caller's name and number, the original destination if the call was forwarded, etc. |
| | | | Trunk Answer from Any Station (TAFAS) |
| | A pager (loudspeaker) can be used to indicate when a call is received, useful in noisy or large workplaces. |
| | | Tone/Voice during a Conversation |
| | | When an extension user is on another call, the user can be alerted to a new call by a call waiting tone, or the caller can speak directly through the user's handset or built-in speaker. |
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1.1.3.2 Ring Tone Pattern Selection
A different ring tone pattern can be assigned to each incoming call type, based on the Ring Tone Pattern Table of the extension.
There are several programmable Ring Tone Pattern Tables. Each table designates a ring tone for intercom calls, CO line calls, doorphone calls, etc., and each extension can choose its preferred ring tone pattern by selecting a table.
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| [Ring Tone Patterns] |
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| [Programming Example: Ring Tone Pattern Table] |
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| • | "PT Ring off Setting" can be enabled or disabled through system programming. If disabled, proprietary telephone (PT) users cannot turn the ringer off for their extensions. |
1.1.3.3 Call Waiting
A busy extension user can be alerted to a new call by Call Waiting. The busy extension user can then answer the second call either by disconnecting the current call or placing it on hold.
One of the following notification methods can be assigned for each extension, depending on the type of telephone being used and the type of call that is waiting. |
| a) | Call Waiting Tone: A tone is heard through the handset or built-in speaker. | | b) | Off-hook Call Announcement (OHCA): The caller's voice is heard through the built-in speaker. | | c) | Whisper OHCA: The caller's voice is heard through the handset. | | d) | Off: No call waiting notification is given. |
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Call Type | Available Notification Method |
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DPT | Other Telephone |
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| | Call waiting tone/OHCA/Whisper OHCA/Off |
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| | Includes CO line calls transferred from another extension or received via an incoming call distribution (ICD) group, as well as doorphone calls. |
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| This feature is also known as Busy Station Signaling (BSS). |
| • | An extension in a VM group (DPT/DTMF) cannot receive a call waiting tone. This is to prevent call waiting tones from interrupting the recording of voice mail messages. |
| • | Data Line Security
When an extension user activates Data Line Security, Call Waiting is turned off. ( 1.10.5 Data Line Security) |
| • | Call Waiting Tone
A proprietary telephone (PT) user can select the preferred call waiting tone through personal programming (Call Waiting Tone Type Selection). |
| • | Caller Information
When an extension receives a call waiting tone, the caller's information will flash on the display for five seconds at 15-second intervals. |
| • | Call Waiting from the Telephone Company
Besides the Call Waiting feature provided by the PBX, you can also subscribe to your telephone company's Call Waiting service and receive call waiting tones from the telephone company's analog lines. If you do, this external call waiting tone will alert an extension user of another incoming CO line call that is waiting. The user can answer the second call by disconnecting the current call or placing it on hold.
For details, consult your telephone company.
Call Waiting Caller ID (Visual Caller ID)
When using the call waiting tone supplied by the telephone company over analog lines, the caller's telephone number will flash on the display twice for five seconds at 15-second intervals. |
