Inter-Tel GMX-48 INSTALLATION & MAINTENANCE Manual
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INTER-TEL PRACTICES FEATURES GMX-48 INSTALLATION & MAINTENANCE Issue 2, May 1990 6. USER-PROGRAMMABLE FEATURE AND STATION KEYS 6.1 There are essentially four types of feature keys: Fixed-function feature keys: The feature codes ac- cessed by these keys are preset and cannot be changed by the programmer or the users. User-programmable feature keys: The default values for these keys are assigned on a system- wide basis in the database (see PROGRAM- MING, page 5-49). Users can then customize their stations by re-programming the keys to ac- cess the desired feature codes, as described below. Default values of the programmable keyset fea- ture keys are shown on page 4-36. These keys can be programmed to access any of the general fea- ture codes (except call splitting - 337, which is a single-line feature code). The keyset FWD key can be programmed with any of the eight call for- warding feature codes. Default values of the SLI programmable keys are shown on page 4-40. These keys can be programmed to access any of the general feature codes except keyset-only or attendant-only codes. Unused line keys assigned as fixed-function keys: Any unused line keys can be assigned feature codes in database programming. This makes them fixed-function keys that cannot be changed by the users. Station keys: Unused line keys can also be desig- nated as “station keys.” These user-program- mable keys are assigned default values in the database for up to four “soft key groups.” Keysets are then assigned to the soft key groups as desired. (Refer to PROGRAMMING, page 5-49, for de- tails.) Because the keys are user-programmable, they can be re-programmed to access the desired feature codes as described below. SLIs cannot have station keys because they do not have line keys. 6.2 TO DISPLAY THE CURRENT FEATURE OR STATION KEY ENTRIES ON A DISPLAY KEYSET: (1) While on hook, press the SPCL key and enter the feature key display feature code (326). (Display shows DISPLAY FEATURE KEY PROGRAMMING.) (2) Press the feature or station key(s) to be dis- played. (Display shows the current feature as- signed, as the keys are pressed.) ,, 6.3 TO RETURN THE FEATURE KEYS TO DEFAULTS: Keyset: While on or off hook, press the‘SPCL key and enter the feature key default feature code (325). If oflhook, hang up. Single-Line Set: Lift the handset, enter the feature key default feature code (325), and hang up. 6.4 TO RETURN THE KEYSET STATION KEYS TO DE- FAULTS: While on or off hook, press the SPCL key and enter the default station keys feature code (329). If off hook, hang up. 6.5 TO PROGRAM THE FEATURE OR STATION KEYS: (1) (2) (3) (4) Keyset: While on hook, press the SPCL key and enter the feature key programming fea- ture code (327). (Display shows NOW PRO- GRAMMING FEATURE KEY.) Single-Line Set: Lift the handset and enter the feature key programming feature code (327). Press the desired feature or station key. (Dis- play shows the feature currently assigned to the key.) Enter the feature code to be stored under that key. Keyset users hear a single progress tone when the programming is completed; single- line sets return to intercom dial tone. (Display shows the newly programmed feature.) An in- valid code causes repeating reorder tones and does not change the feature code assigned to the key. (Display shows ERROR! FEATURE CODE INVALID.) NOTE: If you do not enter a feature code, the programming mode times out when the long interdigit timer expires and you hear reorder tones; the feature code assigned to the key re- mains unchanged. Keyset: Wait for the display to return to date and time, or lift and replace the handset. To program other keys, repeat the procedure. Single-Line Set: Hang up or program other keys by repeating the procedure. Page 4-41
FEATURES Issue 2, May 1990 INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE 7. AUTOMATIC CALL ACCESS (KEYSETS ONLY) 7.1 This feature allows a keyset user to determine the way in which incoming calls are answered. Fea- ture codes are entered by the users to select the type of call access. The four variations are as follows: The user hears intercom dial tone when the hand- set is lifted and must press a line key (or the ANS or OVER key) or the IC key to access an incoming call. The user can answer ringing intercom calls by sim- ply lifting the handset, but outside calls must be answered by pressing a line key or the ANS or OVER key. (When the system is initialized, all keysets have this type of call access.) The user can answer ringing outside calls by lifting the handset, but ringing intercom calls must be answered by pressing the IC key. The user can answer any ringing call by lifting the handset. If no call is ringing, the user hears inter- com dial tone when the handset is lifted. (This op- tion is the way single-line sets work.) NOTE: In any of the above variations, keyset users may still receive handsfree intercom calls (if en- abled). 7.2 The selected options determine how all types of ringing intercom or outside calls (direct calls, trans- ferred calls, recalls, etc.) are answered. If more than one call is ringing at the station, the first call received is the first answered. 7.4 Camped-on calls cannot be answered by simply lifting the handset or pressing the SPKR key.-For ex- ample, a station is programmed to automatically an- swer ringing outside calls, but requires pressing the IC key to answer ringing intercom calls. If a private intercom call rings in and is immediately followed by an outside call ringing in, the display shows the inter- com call message and the outside call camps on. The intercom call also camps on when the handset is lifted. The user can then choose between the camped on calls by pressing either the IC key or the line, ANS, or OVER key. 75 The automatic call access options can be pro- grammed at keyset stations only. Single-line sets are already designed to automatically answer ringing in- tercom and outside calls by lifting the handset. This cannot be changed. 7.6 TO PROGRAM OUTSIDE CALL ACCESS: (1) While on hook, press the SPCL key. (2) Select the option: a. b. If you wish to automatically answer ringing outside calls by lifting the handset, enter the automatic line access feature code (360). You hear a progress tone. If you wish to access outside calls by pressing the line, AM, or OVER key, enter the can- cel automatic line access feature code (361). You hear a progress tone. 7.3 When programmed for automatic C.O. line ac- cess, a station user with allowed answer, but without ring in, for a C.O. line must always press a line, ANS, or OVER key (or press SPCL and enter the automatic line answer feature code - 350) to answer a non-ring- ing call. Transferred ringing calls and recalls can be answered by lifting the handset. Page 4-42 7.7 TO PROGRAM INTERCOM CALL ACCESS: (1) While on hook, press the SPCL key. (2) Select the option: a. b. Ifyou wish to automatically answer ringingin- tercom calls by IiYing the handset, enter the automatic intercom access feature code (362). You hear a progress tone. 1f you wish to access ringing intercom calls by pressing the IC key, enter the cancel auto- matic intercom access feature code (363). You hear a progress tone.
INTER-TEL PRACTICES FEATURES GMX-48 INSTALLATION & MAINTENANCE Issue 2, May 1990 8. MUSIC-ON-HOLD AND BACKGROUND MUSIC 8.1 The system can be equipped with a customer- provided external music source for calls on hold and calls waiting, as well as for background music on key- sets. 8.2 The music-on-hold feature not only makes the wait as pleasant as possible, but it assures the holding party that the call is still connected. 8.3 Music can also be heard on keyset speakers by using the background music feature code. Attendants can enable background music for the optional exter- nal paging speakers by entering a feature code (see page 4-101). Background music and intercom music- on-hold are interrupted for internal and external pages. Music over keyset speakers is also interrupted by calls, programming, and ringing at the station. 8.4 TO TURN KEYSET BACKGROUND MUSIC ON OR OFF: While on or off hook, press the BGND MUSIC key (or press the SPCL key and enter the background music on/off feature code - 313). IfofShook, hang up. 8.5 The optional external music source is a customer-provided radio, tape player, or otherdevice connected through a jack on the KSU. If an external source is connected, music-on-hold (MOH) is en- abled by placing the MOH ON/OFF strap on the KSU in the ON position. It can be disabled by placing the strap in the OFF position. If disabled, background music can still be heard through keyset and paging speakers, and all internal callers will hear music when placed on hold or camped on. The volume of the music-on-hold may also be adjusted by placing the MOH HI/LO strap in the desired position. NOTE: In some circumstances, there may be broad- cast restrictions associated with the music. Check with the music’s original distributor and/or the radio station for copyright and broadcast restrictions con- cerning background music and music-on-hold. 8.6 Throughout the instructions in this section of the manual, the term “music” refers to the selected music-on-hold option: music or silence. NOTE: If background music to external paging speak- ers is enabled, the volume of background music at keyset stations is lowered. Page 4-43
FEATURES Issue 2, May 1990 INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE 9. SIGNALS AND TONES -_ 9.1 There are several distinct signals and tones on the GMX-48 System as shown in the tables below. A. RING SIGNALS 9.2 The signals and tones generated by the ringer or keyset speaker are as follows. TYPE OF CALL SIGNAL Outside call Single long tone every 6 seconds I_ Intercom call or off-hook voice an- Two short tones and a pause nounce call (repeats for private calls) Queue callback Three short tones and a long pause (repeating) Recall from transfer or hold Reminder message _ _I Four short tones and a long pause (repeating) Eight short tones B. CALL PROCESSING SIGNALS 9.3 The following signals and tones are heard through the handset or keyset speaker. SIGNAL ACTION Intercom dial tone Intercom busy signal slow repeating tones I I I I (until camp on) L Four fast tones and a pause (repeating) Reorder tone - fast tones (may be four tones or continuous) System busy signal - reorder tones followed by music n_n~m Single progress tone Camp-on tone - single tone every 15 seconds (programmable) Message waiting tone - Six tones followed by intercom dial tone after lifting the handset or hookflashing Consultation hold tones - four fast tones Handset lifted or SPKR or IC key pressed. Intercom call - repeats for private call or call to non-handsfree station; one double tone for handsfree call. Called station or selected line is busy. Called station is in do-not- disturb. Number or feature code was not accepted, number did not pass toll restriction, or dialing timer expired. All resources are busy, station is camped on. Feature procedure completed, or something needs to be entered. Another station has camped on to your station. A message is waiting at your single-line’station. User just placed a call on consultation hold. Page 4-44
INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE -. FEATURES Issue 2, May 1990 NOTE FOR SINGLE-LINE SET USERS: When the procedures in this manual tell you to hookflash, quickly press and release the hookswitch. If you press the hookswitch to hang up, hold it down until the SL hookflash maxi- mum timer expires (default value is 0.7 sec- onds); otherwise, the system recognizes it as a hookflash. If using a Single-Line Instrument (SLI), use the FLASH key to perform a hookflash. 10. INTERCOM CALLS 10.1 The intercom can be used to place station-to- station calls that can be answered handsfree. Or, it can be used to place private (non-handsfree) calls, A station user that reaches a busy station can camp on, request a callback (queue), leave a message, or use the off-hook voice announce feature (if enabled). Other features that apply to both outside and inter- com calls, as described later in this section of the man- ual, include placing calls on hold, call waiting, call transfer, reverse transfer, and call forwarding. A. PROGRAMMING FOR PRIVATE INTERCOM CALLS 10.2 A station user can place private (non-hands- free) intercom calls by pressing the pound (#) key be- fore dialing the intercom number. Or, the station can be programmed to always send and/or receive private calls using one of the following methods. Ring Intercom Always 10.3 Always place private calls by programming the station with the ring intercom always feature code as described below. While this feature is enabled, the called party hears repeating double tones and must lift the handset (or press the SPKR key or IC key) to answer. 10.4 TO PROGRAM THE STATION TO ALWAYS PLACE PRIKATE INTERCOM CALLS (RING INTERCOM ALWAYS): Xeyset: While .on hook, press the SPCL key and enter the ring intercom always feature code (367). Single-Line Set: Lift the handset. Enter the ring intercom always feature code (367) and hang up. IO.5 TO CANCEL RING INTERCOM ALWAYS: Keyset: While on hook, press the SPCL key and enter the cancel ring intercom always fea- ture code (368). Single-Line Set: Lift the handset. Enter the cancel ring intercom always feature code (368) and hang up. Keyset Handsfree Enable/Disable 10.6 Always receive private (non-handsfree) calls by disabling the keyset handsfree answering feature using the disable handsfree feature code. The keyset user hears repeating double tones when receiving an intercom call and must lift the handset (or press the SPKR and/or IC key) to answer while this feature is enabled. 10.7 TO PROGRAM THE STATION TO ALWAYS RECEMZ PRIKATE INTERCOM CALLS (KEYSETS ONLY): While on hook, press the SPCL key and enter the disable handsfree feature code (310). 10.8 TO RESTORE THE HANDSFREE ANSWERING FEATURE: While on hook, press the SPCL key and enter the enable handsfree feature code (311). Page 4-45
FEATURES Issue 2, May 1990 INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE B. STATION-TO-STATION CALLING 10.13 TO PLACE AN INTERCOM CALL: Receiving Intercom Calls 10.9 TORECEIVEAH4NDSFREEINTERCOMCALLONA KEYSET: When you hear a double tone and a call an- nouncement, and the SPKR key is lit, respond handsfree or lift the handset. (Display identi- fies the source of the call for 10 seconds with INTERCOM CALL FROM XXX.) lo.10 TO RECEIVE A PWATE CALL ON A KEYSET: When you hear repeating double tones, lift the handset, or press the SPKR or IC key to re- spond handsfree. (Display identifies the source of the call with INTERCOM CALL FROM XXX.) IO.11 TO RECEIVE AN INTERCOM CALL ON A SINGLE- LINE SET: When you hear repeating double tones, lift the handset. 10.12 TO RECEIVE A TRANSFERRED-TO-HOLD INTERCOM CALL: If you hear a page announcing that an intercom call is holding at your station: Keyset: When the IC key is fluttering, lift the handset and press the IC key. Or, while on hook, press the IC key to speak handsfree. You are connected to the caller. Single-Line Set: Lift the handset and press the HOLD key’ or enter the individual hold fea- ture code (336). You are connected to the caller. Placing Intercom Calls NOTE: When placing an intercom call, begin dialing before the dial initiation timer expires. If the timer expires, the system drops the connection and sends repeating reorder tones. This prevents an intercom channel from being tied up accidentally. (1) Keyset: EITHER, lift the handset, OR, while on hook, press the SPKR key or the IC key. The SPKR key lights. Single-Line Set: Lift the handset. (If the DTMF decoders, tone generators, or intercom paths are busy, a single-line set user hears silence and camps on. When all necessary re- sources are available, the user hears intercom dial tone.) (2) Ifyou want toplace aprivate (non-handsfree) call to a keyset, press the pound (#) key. (3) Dial an intercom number. The number can be “0” for the attendant, a station intercom num- ber, or a hunt group pilot number. (Display shows number dialed.) If you dial too slowly, the interdigit timer may expire and you will hear repeating reorder tones. a. If calling a handsfree keyset station, speak after you hear a double tone. b. If calling a single-line station, a hunt group, or a keyset with handsfree disabled, you hear repeating double tones until the call is answered. c. If placing a private call, you hear repeating double tones until the call is answered. d. If you dial an invalid number, you hear re- peating reorder tones. e. If the called station is busy, you have the fol- lowing options: 1. Hang up and try later. Or, if dialing handsfree (keysets only), press the SPKR key to disconnect. 2. Do not hang up, your call camps on. When the called station is available, a private call is placed. Refer to para- graph 10.14 for details. 3. Request a busy station callback (queue). This is similar to camping on except that you hang up and wait for the busy station to be available. For more information, refer to paragraph 10.17. Page 4-46
INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE FEATURES Issue 2, May 1990 f. If you hear four fast tones and a pause - repeating, the station is in do-not-disturb. You can use the busy station callback fea- ture. is automatically placed and you hear repeating double tones until the call is answered.. Busy Station Callback (Queue) g. If the called station is busy in do-not-disturb, 10.17 or there is no answer, you can leave a mes- When the called station is busy or in do-not- sage with the station itself or with the sta- disturb, the caller can request a callback (queue) and tion’s message center. For details, refer to hang up until the station is available. This can be done page 4-48. before or after the call camps on. Each station can have only one active queue request at a time. h. If the called station is a busy 24-line keyset (and ifall the necessary conditions for OHKA are enabled), you can announce the call us- ing the off-hook voice announce feature. For a complete explanation of this feature, refer to page 4-51. 10.18 Queue callbacks must be answered before the queue callback timer expires. If a callback is not an- swered, the queue is canceled. If the station is busy when called back, the queue request is placed behind any other waiting queue requests. C. INTERCOM CAMP ON AND BUSY STATION CALLBACK (QUEUE) Camp On 10.14 When a station user calls a busy station or hunt group, the system sends a busy signal. The caller can wait off hook to camp on (after the camp-on timer expires) and hear music while waiting until the called station is available. The system periodically sends call waiting signals to the busy station(s). Up to 47 stations can camp on to the same intercom number. 10.19 TO QUEUE A STATION: (1) Keyset: If you hear a busy signal or do-not-dis- turb signal (four fast tones and a pause, repeat- ing) when calling an intercom number, press the QUE key (or press SPCL and enter the queue request feature code - 6) and hang up. Single-Line Set: If you hear a busy signal ordo- not-disturb signal when calling an intercom number, press the FLASH key (hookflash), enter the queue request feature code (6), and hang up. 10.15 If a called station enables do-not-disturb while an intercom call is camped on, the caller is re- moved from the camped on state and receives do-not- disturb indications (see paragraph 15.4 on page 4-60). Intercom callers cannot camp on to a station that is in do-not-disturb. (2) When the queued station is available, you hear three tones and a long pause, repeating. (Dis- play shows XXX IS NOW AVAILABLE.) Lift the handset. A private call is automatically placed to the queued station. lo.20 TO CANCEL A QUEUE REQUEST (BEFORE THE QUEUED STATION BECOMES AVAILABLE): 10.16 TO CAMP ON TO AN INTERCOM NUMBER: If you hear a busy signal when calling an inter- com number and wish to camp on, do not hang up. You hear music (if enabled) while camped on. When the station is available, a private call Keyset: While on hook, press the QUE key (or press the SPCL key and enter the cancel queue request feature code - 376). Single-Line Set: Lift the handset, enter the cancel queue request feature code (376), and hang up. ’ Page 4-47
FEATURES INTER-TEL PRACTICES Issue 2, May 1990 GMX-48 INSTALLATION & MAINTENANCE 11. INTER-STATION MESSAGES 11.1 If a station is busy, there is no answer, or it is in do-not-disturb, intercom callers may leave a me&age waiting indication. There are two message options: l Have the user return your call. When the station user responds to the message, a call is automati- tally placed to your station. l Leave a message with the station user’s message center. When the station user responds to the message, a call is automatically placed to his or her message center. 11.2 To signal that a message is waiting, a called keyset’s MSG key flashes and the display shows the message source. For single-line sets, a system pro- gramming option can be enabled that sends message waiting tones when the user lifts the handset or presses the hookswitch. 11.3 Any station or hunt group can be designated as the message center for any other station or group of stations. However, a station cannot be programmed as its own message center. When the system is initial- ized, circuit 1.1 (the primary attendant) is the mes- sage center for all stations, except itself. 11.4 If the designated message center is a voice mail system, the voice mail system is called after the mes- sage (at message center) timer expires. When the voice mail system answers the call, the called station user’s “mail box” is automatically dialed. The caller can then leave a message in the mail box. If a display keyset is called, display shows MESSAGE RE- CEIVED FROM [Voice Mail]. 11.5 Each station user can leave message waiting in- dications at more than one station, but only one per station. A station can receive up to 47 messages, and there can be a maximum of 126 waiting messages in the system. 11.6 On display keysets, the messages can be viewed in the order they were received and answered as de- sired. A. LEAVING MESSAGES - 11.7 TO LEAVE A MESSAGE WAITING INDICATION: (1) When calling a station, if you hear a busy sig- nal, do-not-disturb signal (repeating signal of four fast tones and a pause), or the call is not answered: Keyset: Press the MSG key. Single-Line Set: Press the FLASH key (hook- flash) and enter the message feature code (365). (2) To have the called party call you: Hang up or press a line key or the IC key to disconnect be- fore the message (at message center) timer ex- pires. To leave the message with the called party S mes- sage center: Do not hang up. When the message (at message center) timer expires, a private call is automatically placed to the called party’s message center. Leave your message with the message center and hang up. If the message center does not answer the call (that is placed after the timer expires), the message at the called station still processes the message as coming from the message center. NOTE: If the station you are calling does not have a designated message center or if the sta- tion happens to be your message center, you will hear dial tone immediately after pressing the MSG key. The message indication is left at the called station and display keysets will show MESSAGE RECEIVED FROM lyour sta- tion]. Page 4-48
‘. INTER-TEL PRACTICES FEATURES GMX-48 INSTALLATION & MAINTENANCE Issue 2, May 1990 Canceling A Message Waiting Indication That YOU Left 11.8 Occasionally, you may wish to cancel a message that you left before the station user responds to the message. If the message was left with the station’s message center, you cannot cancel it from your sta- tion; it can only be canceled from the message center station. 11.9 TO CANCEL A MESSAGE YOU LEFT (1) At your station, lift the handset and dial the id tercom number (or press the SPD/BLF key) of the station with the message. (2) Press the SPCL key (FLASH on single-line sets) and enter the message cancel feature code (366). You hear intercom dial tone (even if a message was not present at the called sta- tion). B. RESPONDING TO MESSAGES Answering Messages 11.18 TO ANSWER MESSAGES AT A KEYSETr (1) (2) If your MSG key is flashing (display shows MESSAGE RECEIVED FROM XXX), lift the handset and press the MSG key. Depend- ing on how the message was left, an intercom call is placed to either the station that left the message or your message center. NOTE: If, after pressing the flashing MSG key, the called station does not answer a pri- vate call, is busy, or is in do-not-disturb, your message key continues to flash (if you hang up, the display indicates a waiting message). The message waiting indications are canceled only when you are actually connected with the called station. If the MSG key continues to flash, there is another message (display shows the next mes- sage). Repeat step 1. 11.11 TO ANSWER MESSAGES ATA SINGLE-LINE SET: (1) If you hear message waiting tones (six tones) after lifting the handset or hookflashing, press the FLASH (hookflash) and enter the mes- sage feature code (365). Depending on how the message was left, an intercom call is placed to either the station that left the message or your message center. NOTE: If the called station does not answer, is busy, or is in do-not-disturb, you may hang up. When the handset is lifted again you will hear message waiting tones. The message waiting indications are canceled only when you have actually connected with the called station. (2) If you hear message waiting tones after hook- flashing or when the handset is lifted again, there is another message waiting. Repeat step 1. Canceling A Waiting Message ( _ 11.12 TO CANCEL A MESSAGE WITHOUT ANSWERING AT A KEYSET (1) If the MSG key is flashing (display shows mes- sage source), remain on hook and press the asterisk (*) key. Or, press SPCL and enter the cancel current message feature code (379). The message is canceled. (2) If the MSG key continues to flash, there is another message (display shows the next mes- sage). Either respond to the message or cancel it. 11.13 TO CANCEL A MESSAGE WITHOUT ANSWERING AT A SINGLE-LINE SET: (1) (2) If you receive message waiting tones, press FLASH (hookflash) and enter the cancel cur- rent message feature code (379). The message is canceled. If you hear message waiting tones after hook- flashing or when the handset is lifted again, there is another message. Either respond to it or cancel it. Page 4-49
FEATURES Issue 2, May 1990 ‘b INTER-TEL PRACTICES GMX.48 INSTALLATION & MAINTENANCE Viewing Waiting Messages 11.14 TO VIEW RECEIVED MESSAGES AT A DISPLAY KEYSET: (1) If your MSG key is flashing, one or more mes- sages are waiting. While on hook, press the MSG key repeatedly to view waiting messages. (2) If desired, you can answer or cancel a message while it is displayed. Alternate Message Source NOTE: This feature is available only in the Advanced and Intermediate software packages. 11.15 An “alternate message source” feature was developed to enable a voice mail system to leave messages through a station or hunt group that is designated as its alternate message source. When a message is left on the voice mail system for a station user that has an assigned mailbox, the voice mail unit automatically dials the message feature code (365) and then dials the intercom number of the called sta- tion. The called station receives message waiting indi- cations. If it is a display keyset, the display shows MESSAGE RECEIVED FROM [alternate message source] rather than from the voice mail circuit. An ac- tual intercom call has not been placed; only the mes- sage waiting indications are affected. When the called station user retrieves the message an intercom call is placed to the alternate message source. . 11.16 Two possible applications for this feature are: routing messages through a COU circuit to allow key- sets to use DTMF tones to retrieve messages and routing messages through a hunt group to make effi- cient use of voice mail resources. These applications are described below. 11.17 Routing messages through a COU circuit: To achieve this function, an unused single-line circuit is programmed as the alternate message source for the voice mail station circuits and is then programmed to automatically forward all calls to a COU circuit that is connected to the voice mail unit. When a user re- sponds to a message from the voice mail unit, the call is automatically forwarded to the COU circuit. This leaves the voice mail single-line circuit available to receive messages while the COU circuit is in use. 11.18 Routing messages throngh a hunt gr_oup: To make efficient use of multi-port voice mail units, the ports could be placed in a voice mail hunt group which might be named “V-Mail” and the voice mail hunt group’s pilot number would be assigned as the alter- nate message source. When a user responded to a message from “V-Mail,” the call would be sent to the pilot number and circulate until it located an avail- able voice mail port. Page 4-50