Lucent Technologies
`Bell Labs Innovations
`
`MERLIN®
`
`COMMUNICATIONS SYSTEM
`
`CENTREX/PBX CONNECTION
`
`999-500-138 IS
`Issue 1
`March 1985
`
`Voip-Pal Ex. 2047
`IPR2016-01198
`
`Voip-Pal Ex. 2012
`IPR2017-01398
`
`

`

`© 1984 AT&T
`All Rights Reserved
`Printed in U.S.A.
`
`999-500-138 IS
`Issue 1
`March 1995
`
`MERLIN is a registered trademark of Lucent Technologies.
`
`Intellectual property related to this product (including trademarks) and registered to
`AT&T Corporation has been transferred to Lucent Technologies Incorporated.
`
`Any references within this text to American Telephone and Telegraph Corporation
`or AT&T should be interpreted as references to Lucent Technologies Incorporated.
`The exception is cross references to books published prior to December 31, 1996,
`which retain their original AT&T titles.
`
`Lucent Technologies – formed as a result of AT&T’s planned restructuring –
`designs, builds, and delivers a wide range of public and private networks,
`communication systems and software, consumer and business telephone systems,
`and microelectronic components. The world-renowned Bell Laboratories is the
`research and development arm for the company.
`
`

`

`The intent of this document is to help you make
`the most effective use of the MERLIN™ com-
`munications system in combination with either
`Centrex or PBX service. The document has two
`parts: The first part highlights aspects of the
`MERLIN system that are of particular interest to
`Centrex/PBX service users, and the second part
`explains procedures for using the MERLIN
`system that arise out of combining it with other
`services.
`
`The information presented here applies to all
`models of the MERLIN system, unless other-
`wise stated. Use this document in conjunction
`with the documents that came with your system;
`they will provide further information about your
`particular model:
`
`Installation Guide - contains procedures for the
`installation and expansion of your system
`
`Administration Manual - contains administrative
`procedures and gives an overall view of the
`capabilities of the system
`
`User’s Guide - contains procedures for using
`and programming voice terminals.
`
`A Quick Reference Chart, which highlights im-
`portant aspects of using the MERLIN system in
`conjunction with Centrex/PBX service, appears
`at the end of this document. Be sure to share
`this information with the people who use your
`MERLIN system.
`
`1
`
`

`

`3 4488
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`Table of Contents
`Introduction
`
`Using Your Lines to Your Best Advantage
`Shared Lines
`Personal Lines
`The Right Combination — Using Your Lines
`
`Covering Your Calls
`Special Attendant Features
`The Programmable Line Ringing Feature
`The Call Coverage Feature
`The Right Combination — Coverage
`
`Using MERLIN System Features With
`Centrex/PBX Service
`The Recall Button
`The Speed Dialing and Outside Auto Dial Features
`The Intercom Feature
`The Hold Feature
`The Transfer Feature
`The Conference Feature
`The Call Pickup Feature
`
`Programming Tips for Your MERLIN System With
`Centrex/PBX Service
`Programming Telephone Numbers
`Programming Centrex or PBX Features
`
`Quick Reference Chart
`
`Quick Programming Instruction Chart
`
`2
`
`

`

`Introduction
`The MERLIN communications system-Centrex/PBX connection is the
`answer to improving your telephone service without disrupting your cur-
`rent Centrex or PBX service. By giving you greater flexibility, the
`MERLIN system’s advanced technology and modular design extend the
`usefulness of your Centrex or PBX service. With many ways to combine
`components and with feature cartridges and modules offering a wide
`variety of useful features, you can choose those options that make the
`best use of your existing service and meet the particular needs of your
`office.
`
`The modular design of the MERLIN system invites your involvement.
`You can install your MERLIN system yourself — and save money as
`you do it. Lines, voice terminals, and control units all simply plug into
`one another and attach easily to your existing Centrex/PBX wiring. Even
`the software is modular: both cartridges and modules easily slide into
`the control unit’s clearly marked slots. You may decide to do some, all,
`or none of the installation, but the more you can do, the more you’ll
`save.
`
`After your system is installed, you are not locked into an inflexible ar-
`rangement, either. The entire system, including individual voice terminals,
`can be easily reprogrammed by using the procedures in the Administra-
`tion Manual and User’s Guide. If your group moves, you simply take your
`portable MERLIN system equipment with you and set it up in a new
`location. As more people join your department, you can increase your
`system’s capacity by adding expansion modules or units and voice ter-
`minals, and you can buy new software when you want additional
`features.
`
`Your MERLIN system can adapt to the arrangement you currently have,
`or you can use it to increase efficiency or to alleviate deficiencies in your
`current service. For instance, you may need a message service, or you
`may want control over the set-up and maintenance of your system in-
`stead of relying on building services personnel. Of particular interest to
`those who have Centrex or PBX service are the MERLIN system’s op-
`tions for using lines and for providing coverage.
`
`3
`
`

`

`Using Your Lines to Your Best
`Advantage
`The MERLIN system gives you two basic options for using your lines:
`you may choose to have people share incoming lines or you may main-
`tain the single line per person that you probably have with Centrex or
`PBX service. Figure 1 illustrates the difference in the two basic con-
`figurations. Between these two options, there are many possible varia-
`tions, including a combination of shared and personal lines.
`
`SHARED LINES
`The standard arrangement for MERLIN systems is called “square”
`operation, meaning that each incoming line appears as a separate line
`button on each voice terminal. Everyone has access to all lines and can
`use all MERLIN system features. By means of its Automatic Line Selec-
`tion feature, the MERLIN system selects a free line whenever people
`pick up their handsets. So even if several people share the same lines,
`there is little chance of people barging in on calls by mistake. And to
`preclude this from happening at all, you can use the Privacy feature,
`which prevents anyone from interrupting calls in progress.
`
`By sharing lines you may be able to reduce the number of incoming
`lines you need, since many of your lines may be used only intermittently
`throughout the day. To determine how great a reduction you can achieve,
`assess the number and type of calls that people make. If most calls are
`intercom calls, it might be more cost-effective for you to share the out-
`side lines that aren’t used as often.
`
`4
`
`

`

`Personal Lines
`
`Shared Lines
`
`CENTREX OR PBX SERVICE
`
`The MERLIN
`System
`
`CENTREX OR PBX SERVICE
`
`The MERLIN
`System
`
`Figure 1
`The two basic options for using your lines: personal lines versus pooled lines. To have personal
`lines, each incoming line is assigned to only one person. If lines are shared, everyone can use
`any of the incoming lines.
`
`5
`
`

`

`A variation of sharing lines is “pooling” them, a feature available with
`Models 1030 and 3070. Instead of having each incoming line appear as
`a separate line button on each phone, several lines may be grouped or
`“pooled” under one line button. Figure 2 illustrates the distinction
`between square and pooled operation from the perspective of someone
`using a voice terminal. Since the MERLIN system is designed to
`accommodate only one call per line, having two line pool buttons
`enables someone to use features that involve two calls at one time, such
`as Conference.
`
`And to prevent the problem of barge-in, the Privacy feature is built into
`pooled lines.
`
`Aside from the cost savings associated with line sharing, pooled lines
`have an added advantage: more buttons on the voice terminal become
`available for programming special features. For large systems, you can
`imagine the problem of showing ten or fifteen lines on a voice terminal.
`Either every button would be assigned a line, or everyone would need a
`34-button set!
`
`6
`
`

`

`The MERLIN System
`
`Square Operation
`
`Pooled Operation
`
`Figure 2
`In this example, both voice terminals give access to the same lines. With square operation, a
`person has a button for each line and can choose a specific line if necessary. With pooled
`operation, the person does not know exactly which line is used at any time. Four lines can still
`be used, but only two line buttons are needed, freeing up buttons for programmable features.
`
`7
`
`

`

`PERSONAL LINES
`Sharing lines may be a new idea in your office, for many people in your
`business may be accustomed to having personal lines. To some, a per-
`sonal line may be essential; to others, a pleasant, but unnecessary
`privilege. You can retain personal lines for those who require them. The
`MERLIN system provides these people with efficient service without
`disrupting the way they are accustomed to doing business.
`
`However, if someone has only a personal line, that precludes the use of
`those MERLIN system features that require two lines, such as the Con-
`ference feature. So, in addition to the personal lines you provide, con-
`sider providing one or two extra lines for everyone to share. With access
`to at least one other line, the people with personal lines will have the
`advantages of a personal line as well as access to all your MERLIN
`system’s features.
`
`Even if you can’t supply extra lines, people with personal lines can still
`put an outside call on hold and consult with someone else over the
`intercom. And they can also use the Centrex or PBX Conference feature,
`which requires only one line.
`
`THE RIGHT COMBINATION — USING YOUR LINES
`Of course, the options of personal and shared lines are not mutually
`exclusive: combine them in whatever way best suits your needs.
`
`Suppose, for example, a department previously had personal lines for
`each of its twenty members. Because the receptionist answered many in-
`coming calls anyway, when the MERLIN system was installed, it
`seemed logical to have the receptionist answer and transfer all calls.
`After assessing their needs, members of the department decided that
`eight lines, in a pooled arrangement, were adequate. Two supervisors
`were given personal lines to use in addition to the line pool. In this way,
`only ten lines were needed for the whole group, reducing the number of
`lines by half, while still providing efficient service for everyone. Figure 3
`illustrates how this department was able to use its lines effectively.
`
`8
`
`

`

`The MERLIN System
`
`STAFF PERSON 1
`Line Pool
`
`SUPERVISOR 1
`555-2000
`Line Pool
`
`STAFF PERSON 18
`Line Pool
`
`SUPERVISOR 2
`555-3000
`Line Pool
`
`ATTENDANT
`555-1205
`555-1200
`555-1206
`555-1201
`555-1207
`555-1202
`555-2000
`555-1203
`555-3000
`555-1204
`
`Figure 3
`This department originally had 20 personal lines, one for each person in the department. By
`pooling 8 lines, everyone has access to a free line when necessary. In addition, each supervisor
`has a personal line to make a total of 10 incoming lines, half of what the department formerly
`had. All 10 lines appear on the attendant’s console.
`
`9
`
`

`

`Covering Your Calls
`In any business, answering calls is a major task. You may have an atten-
`dant who answers and transfers all incoming calls, a secretary who
`screens calls for one or two managers, or perhaps an informal arrange-
`ment where several people cover for one another. Several MERLIN
`system features help make call coverage easier and ensure that calls get
`answered.
`
`SPECIAL ATTENDANT FEATURES
`Having an attendant is perhaps the surest way of having all calls
`answered. The Transfer feature enables the attendant to pass calls on
`quickly, with or without voice announcement, to voice terminals sharing
`the MERLIN system’s lines. Transferred calls never run into a dead end,
`either. If it’s necessary to transfer a call to someone in your company
`who is not connected to your system, use the Centrex or PBX Transfer
`feature. Any transferred call that isn’t answered rings back at the atten-
`dant’s console.
`
`An attendant may also screen calls by using the Hold and Intercom
`features. A secretary who covers calls for only a few people is most
`likely to use this method. With Models 206, 410, and 820 using Feature
`Package 2, and with Models 1030 and 3070, an attendant may also pro-
`vide a message service by turning on a light at an individual’s voice ter-
`minal to indicate that a message is waiting.
`
`Some PBX systems generate a message light by sending a periodic
`signal to the telephone; these message signals can sometimes cause
`MERLIN system voice terminals to ring. If you have this type of PBX,
`advise your PBX message center not to send message signals to
`MERLIN system voice terminals.
`
`10
`
`

`

`THE PROGRAMMABLE LINE RINGING FEATURE
`This feature allows an individual to program any line appearing on his or
`her voice terminal to ring immediately, to ring after a delay (after ringing
`elsewhere first), or not to ring at all. Although simple in concept, this
`feature provides extensive additional convenience.
`
`For example, Programmable Line Ringing makes possible a simple varia-
`tion on having an attendant answer all incoming calls. Since answering
`all calls all the time may be overwhelming — especially if the person
`responsible has other duties — you may choose to have lines ring at in-
`dividuals’ voice terminals and to have them ring at the attendant’s con-
`sole only if they aren’t answered within two rings. That way, the atten-
`dant needs to answer calls only when people are away from their desks.
`
`THE CALL COVERAGE FEATURE (Models 1030 and 3070 Only)
`Another type of coverage is provided with the Call Coverage feature. Any
`person can cover for any other person on an as-needed basis by using
`a programmed Cover button. For instance, if a secretary wants to cover
`for a supervisor, a Cover button allows the secretary to answer any of
`the supervisor’s calls — incoming, transferred, or intercom. Thus, instead
`of having a full-time answering position, several people can divide up the
`task of coverage.
`
`Programmable Line Ringing can be applied to Call Coverage, too. For
`example, the supervisor’s calls might ring immediately at his or her voice
`terminal and then, if not answered, ring at the secretary’s voice terminal.
`Even when away from the office, the supervisor knows all calls are
`covered. If the supervisor is away for an extended period of time, the
`secretary may even choose to reprogram the Cover button so that calls
`ring immediately. Remember that all MERLIN system features —
`including the Call Coverage and Programmable Line Ringing features —
`are easily programmed and easily changed to meet individuals’ par-
`ticular needs, even as they change from day to day.
`
`11
`
`

`

`THE RIGHT COMBINATION — COVERAGE
`Using Programmable Line Ringing and Call Coverage, people in your
`office can determine the right mix of coverage methods to direct calls to
`the right person and to support the call-handling patterns in your
`business.
`
`As an example, at one company, the receptionist has primary respon-
`sibility for answering all incoming lines, except the manager’s personal
`line. These lines are programmed to ring immediately at the recep-
`tionist’s voice terminal and, in an effort to cut down on noise and inter-
`ruptions, not to ring at all at individuals’ voice terminals. As for the
`manager’s personal line, it is programmed to ring at the manager’s voice
`terminal. But since the manager’s secretary has primary responsibility for
`answering and screening the manager’s calls, including any coming in
`on the manager’s personal line, the secretary has programmed a Cover
`button so that all the manager’s calls ring first at the secretary’s voice
`terminal. To back up the receptionist during busy periods, the secretary’s
`voice terminal is also programmed to have incoming calls ring there if
`the receptionist doesn’t answer in two rings. The receptionist, in turn, is
`able to cover for the secretary by having a Cover button that forwards
`the secretary’s calls to the receptionist if the secretary doesn’t answer
`after two rings. That way, if the secretary is out of the office, the recep-
`tionist can cover any of the secretary’s calls, including any that come in
`on the manager’s personal line. Figure 4 illustrates how various features
`may be combined for effective coverage.
`
`12
`
`

`

`The MERLIN System
`
`SECRETARY
`
`MANAGER
`
`RECEPTIONIST
`
`STAFF
`
`Line rings immediately at individual’s voice terminal
`
`Calls transferred by receptionist
`
`Line rings at receptionist’s voice terminal by programming a Cover button for delayed ringing
`
`Line rings at the secretary’s voice terminal after ringing 2 times at the receptionist’s voice
`terminal
`
`Figure 4
`
`This office uses a variety of coverage methods to ensure efficiency. All calls are answered,
`screened as necessary, and then passed onto the right person. The receptionist’s and secretary’s
`primary answering responsibilities differ, but they provide backup for each other by using the Call
`Coverage and Programmable Line Ringing features.
`
`13
`
`

`

`Using MERLIN System Features
`With Centrex/PBX Service
`Expect a smooth transition when you switch to using your MERLIN
`system. Office personnel can use their voice terminals as soon as they
`are plugged in, for the MERLIN system combines the best features of
`traditional key phone systems with advanced technology. The familiar
`features of multiple line appearances, lights to show line status, and a
`button to press to put calls on hold still exist. In fact, the MERLIN
`system’s advanced design refines, rather than revolutionizes, the way you
`use your phones.
`
`MERLIN system features can be used in most situations on both inter-
`com and incoming lines, but there may be times when you need to use
`a Centrex or PBX feature instead. For example, to transfer a call to a
`person who uses only Centrex/PBX service, an individual must use the
`Centrex/PBX Transfer feature instead of the MERLIN system Transfer
`feature. Even though such situations are rare, they are explained here for
`your information. More often, however, people will discover that the
`MERLIN system makes handling telephone calls much easier.
`
`THE RECALL BUTTON
`A significant advantage of your MERLIN system voice terminal is that
`for any Centrex or PBX feature requiring a switchhook flash, you now
`use the Recall button. Touching Recall, much simpler than pressing a
`switchhook, ensures a correctly timed signal. (NOTE: Pressing the
`switchhook on your voice terminal will not generate a “flash.”) If you
`need to use a PBX Call Hold procedure, such as “press switchhook, dial
`*71,” you touch Recall and dial *71.
`
`THE SPEED DIALING AND OUTSIDE AUTO DIAL FEATURES
`(Models 206, 410, and 820 with Feature Package 2, and Models 1030 and
`3070)
`If your MERLIN system has the Speed Dialing feature — which uses
`the pound sign (#) and two-digit codes for dialing outside numbers
`quickly — and people want to use a Centrex or PBX feature code that
`begins with a pound sign, they now use two pound signs (##). Using two
`pound signs with the Centrex or PBX feature code prevents the
`MERLIN system from misreading it.
`
`Also, people must dial *90 every time they program a number or
`feature code for Speed Dialing or Outside Auto Dialing. So, if someone
`wanted to program a Centrex code such as #5 for Speed Dialing, he or
`she would dial *90, then a Speed Dialing code such as #01, then ##5.
`
`THE INTERCOM FEATURE
`Users of Centrex/PBX service must make a distinction between two
`groups of people that they call. If all the people that they can possibly
`call are symbolized as concentric circles, the inner circle includes people
`inside the building that they call with extension numbers, and the outer
`circle includes people outside the building that they call by dialing 9 or
`some other code. The MERLIN system Intercom feature introduces
`another group.
`14
`
`

`

`MERLIN system users, contacted with the Intercom feature, now form
`the inner circle, and anyone else, including Centrex/PBX users in the
`same building, is “outside.” Figure 5 illustrates the various groups people
`may call and identifies how to reach each group using MERLIN system
`voice terminals.
`
`This inner circle of MERLIN system users provides a great advantage
`over your current Centrex or PBX service: a close network of users tied
`together by the Intercom feature. Whether your office uses the MERLIN
`system for an entire department or for a manager and support staff, the
`Intercom feature makes communication faster and more flexible than it is
`with Centrex or PBX service alone. For instance, people can arrange
`signaling patterns to contact each other quickly, and they can announce
`calls to be transferred.
`
`MERLIN SYSTEM USERS
`Use intercom system (dial code or touch Intercom
`Auto Dial button).
`
`CENTREX/PBX USERS OUT-
`SIDE MERLIN SYSTEM
`
`OUTSIDE USERS
`
`Contact Centrex/PBX
`users with extension
`numbers.
`
`Contact people outside the building by dialing to
`access an outside line (usually 9) and the
`number.
`
`May include long-distance, bank, and credit card
`services; a company network (usually dial 8 to
`access network lines); and special lines, such as
`WATS and FX.
`
`Figure 5
`A symbolic representation of the distinction between
`MERLIN system users and outside users.
`
`15
`
`

`

`THE HOLD FEATURE
`With the MERLIN system, the familiar Hold feature requires just a touch
`of a button — and has other advantages, too. When someone puts a
`call on hold, the green light flashes next to the call’s line button. The
`speed of the flashing indicates whether you or someone else put the call
`on hold, reducing confusion about which call is on hold and who put it
`on hold. Furthermore, if a line is left on hold for more than a minute, a
`beep reminds the person of the call.
`
`There are two instances, though, when individuals need to use the Cen-
`trex or PBX Hold feature. Because the MERLIN system allows only one
`call per line, they must use the Centrex or PBX Call Waiting procedure
`(if it’s available) in order to hold one call and answer a second on the
`same line. If people in your office prefer the convenience and advan-
`tages of the MERLIN system Hold feature, have Call Waiting discon-
`tinued and ask the telephone company to put your lines in a hunt group.
`(When a call comes in on a busy line that is part of a hunt group, the
`call “hunts” or tries the next line in the group to see if it is free.) That
`way, while a person is busy on one call, he or she can see where
`another call is coming in and then use the MERLIN system Hold
`feature, which is simpler than the Centrex or PBX Call Waiting feature.
`
`The other situation that requires the Centrex/PBX Hold feature is when
`MERLIN system users have only personal lines. They can put a call on
`hold with the MERLIN system Hold feature, but since they have only
`one line, they cannot put one call on hold and answer a call coming in
`on another line (for example, on an office mate’s voice terminal) unless
`they use their Centrex or PBX Hold feature.
`
`THE TRANSFER FEATURE
`To move calls from one voice terminal to another sharing the same lines,
`the MERLIN system Transfer feature is the best choice. It is easy to use
`and offers the option of announcing the transferred call. Since trans-
`ferred calls ring back if they are not answered, there’s little chance of
`losing the call as can happen with Centrex or PBX service. When the
`call rings back, the light next to its line button flashes on and off so
`even the busiest attendants can tell what line the returning transferred
`call is on.
`
`To transfer a call to another MERLIN system user sharing the same line
`— whether the call comes from outside the building or from a
`Centrex/PBX user — use the MERLIN system Transfer feature. However,
`if someone needs to transfer a call to a Centrex/PBX user, he or she
`must use an outside line and the Centrex/PBX Transfer feature.
`(Remember to use the Recall button—a switchhook flash will disconnect
`the call.)
`
`16
`
`

`

`THE CONFERENCE FEATURE
`Any MERLIN system with a feature package or module provides a Con-
`ference feature that enables someone to add one or more outside lines
`to a call. With Models 1030 and 3070, it’s possible to conference as
`many as two intercom lines as well, permitting conference calls with up
`to five participants. The Conference feature also has the benefit of show-
`ing which lines are used in the conference. The Drop feature lets the
`user disconnect any caller from the conversation without interfering with
`other connections.
`
`Those MERLIN system users who have only personal lines cannot use
`this feature and must use the Centrex/PBX Conference feature instead.
`
`THE CALL PICKUP FEATURE (Models 206, 410, and 820 with Feature
`Package 2 and Models 1030 and 3070)
`The best way to answer someone else’s call is to program line buttons
`with different ringing options (for example, if you don’t answer it, your
`personal line rings at your secretary’s voice terminal) or to use the
`MERLIN system’s Call Coverage feature (available on Models 1030 and
`3070). There may be times, however, when people need to answer calls
`for those they don’t ordinarily cover. To pick up a call for another
`MERLIN system user, use the MERLIN system Call Pickup feature. To
`pick up a call for a Centrex/PBX user, use the Centrex/PBX Call Pickup
`feature.
`
`17
`
`

`

`Programming Tips For Your
`MERLIN System With
`Centrex/PBX Service
`One of the most useful aspects of MERLIN system voice terminals is
`that people may program them to meet individual needs. If people have
`extra buttons on their voice terminals that aren’t needed for lines, they
`can program them either with frequently called numbers or with features
`that increase their calling capabilities. The User’s Guide and Admin-
`istration Manual describe procedures for programming features; this sec-
`tion explains the procedural changes that are important if your MERLIN
`system is connected to Centrex or PBX service.
`
`PROGRAMMING TELEPHONE NUMBERS
`There are two kinds of Auto Dial buttons: intercom and outside. Since
`the code for programming MERLIN system intercom numbers (*6) is
`different from the one for outside numbers (*90), someone who wants
`to program telephone numbers must remember to distinguish between
`intercom numbers for MERLIN system users and “outside” numbers, as
`described earlier in “The Intercom Feature,” page 14. Only MERLIN
`system intercom codes can be programmed onto Intercom Auto Dial but-
`tons. If someone wants to program an Auto Dial button for an intercom
`number on the Centrex or PBX system, he or she must program the
`number on an Outside Auto Dial button.
`
`An Outside Auto Dial button can represent the number of anyone out-
`side the MERLIN system. Individuals may want to program the number
`of someone who also uses Centrex or PBX service. If so, they use the
`code for programming outside numbers, but add only the extension
`number, just as they would if they were dialing the number directly.
`
`Individuals save the most dialing time by programming often-called
`numbers that are outside the building. However, if your Centrex/PBX ser-
`vice does not immediately return a dial tone after dialing to access an
`outside line (usually by dialing 9), they must program a pause by using
`Hold (Pause) after the initial digit to give the system time to return a dial
`tone. For example, to program the number 555-1234 onto an Outside
`Auto Dial button, a person would dial 9, touch Hold (Pause), and dial
`5551234.
`
`18
`
`

`

`PROGRAMMING CENTREX OR PBX FEATURES
`In addition to, or instead of, telephone numbers, people may want to pro-
`gram buttons with special features. The MERLIN system offers
`numerous custom features. (Check the User’s Guide for more information
`about custom features.) Individuals may also program one or more Auto
`Dial buttons with codes for Centrex or PBX features they often use, For
`instance, if they must often have their calls forwarded, they can program
`a button for Call Forwarding and one for Call Forwarding Cancel. Then,
`instead of dialing a code every time they want calls forwarded, they can
`simply touch a button. If they always forward their calls to the same
`extension, they can include that number in the call forwarding sequence.
`People can program Centrex/PBX features as they would MERLIN
`system custom features, except for the following three changes.
`
`1.
`
`2.
`
`If the Centrex or PBX feature uses a switchhook flash (remember
`that Recall must be used instead of a switchhook flash), they must
`include a pause after Recall. For instance, if the PBX procedure for
`Automatic Callback is “press switchhook, dial 72,” they program the
`button by touching Recall and Hold (Pause) and then dialing 72.
`Note also that Recall must be first in the programming sequence.
`
`When programming a Centrex/PBX feature with a code beginning
`with a star (*), people must always use the programming code for
`outside numbers (*90) before the feature code. Without that addi-
`tional programming code, the MERLIN system will read the
`Centrex/PBX code as a special MERLIN system programming
`code. (Of course, when not in programming mode, the MERLIN
`system has no trouble reading the star code.) Your system’s User’s
`Guide suggests the shortcut of omitting the *90 programming code
`when a button is already defined as an Outside Auto Dial button.
`However, when you use the MERLIN system behind a Centrex/PBX
`system, you must not use the shortcut. For example, if *65 is the
`centrex code for Call Forwarding, the person dials *90 plus *65.
`
`3.
`
`If your MERLIN system has the Speed Dialing feature and the
`Centrex/PBX feature code begins with a pound sign (#), someone
`programming a Centrex/PBX code must use two pound signs (##)
`instead of one. This prevents the MERLIN system from reading the
`feature code as though the person were trying to program a Speed
`Dialing code. For instance, if #22 is the PBX code for Call For-
`warding Cancel, the person dials ##22.
`
`Thus, not only are people able to use the many MERLIN system
`features, they can also use any Centrex or PBX feature that they find
`useful.
`
`One last point to note here is that if your Centrex/PBX service does not
`immediately return a dial tone after dialing to access outside lines,
`Saved Number Redial and Last Number Redial only work with Cen-
`trex/PBX extension numbers.
`
`19
`
`

`

`The MERLIN Communications System
`Quick Reference Chart
`Your MERLIN system User’s Guide provides specific details for using your voice terminal. This separate Quick
`Reference Chart provides additional helpful information, necessary because your company also uses either Cen-
`trex or PBX service.
`
`IF
`
`THEN
`
`You want to use a Centrex/PBX feature that
`requires a switchhook flash
`
`Your MERLIN system has a Speed Dialing
`feature and you want to use a Centrex/PBX feature
`code that begins with a pound sign (#)
`
`touch Recall instead.
`
`Example
`Before: press switchhook, dial *3
`Now: touch Recall, dial *3
`
`use two pound signs (##).
`
`Example
`Before: #21 for Call Forwarding Cancel
`Now: ##21 for Call Forwarding Cancel
`
`Your current service doesn’t return a dial tone right
`after you dial 9 to get an outside line
`
`the MERLIN system Last Number Redial and
`Saved Number Redial features will only work with
`Centrex/PBX extension numbers.
`
`You have a personal line (and access to no other
`lines)
`
`use your Centrex/PBX Conference and Call
`Waiting features instead of the MERLIN system
`features.
`
`You want to transfer a call to a Centrex/PBX user
`who is not on your MERLIN system
`
`use the Centrex/PBX Transfer procedure (usually
`Recall and extension number) instead of the
`MERLIN system procedure.
`
`Remember: Switchhook flash = Recall
`
`20
`
`

`

`The MERLIN Communications System
`Quick Programming Instruction Chart
`You can program Outside Auto Dial buttons with Centrex or PBX features, in addition to the numbers and features
`described in your User’s Guide.
`
`IF PROGRAMMING
`
`THEN USE
`
`EXAMPLE
`
`The number of a Centrex/PBX
`user
`
`the extension number (assume
`the button is already pro-
`grammed for Outside Auto
`Dialing).
`
`6096
`
`A feature code beginning with a
`star ( * )
`
`*90 to redefine the button as
`Outside Auto Dial before pro-
`gramming the code.
`
`* 90 * 2
`
`A feature code beginning with a
`pound sign (and your MERLIN
`system has a Speed Dialing
`feature)
`
`Outside numbers (and you don’t
`get a dial tone right after
`dialing 9)
`
`two pound signs (that is, a pound
`sign before the code)
`
`##3
`
`a pause after the 9.
`
`9 + Hold (Pause) + number
`
`A switchhook flash (or Recall)
`
`Recall followed by a pause.
`
`Recall + Hold (Pause)
`
`21
`
`

`

`H H
`
`old, 10, 16
`Hold (pause), 18, 19, 21
`Hold reminder, 16
`Hunt group, 16
`
`I I
`
`nstallation Manual, 1
`Intercom
`announcement, 15, 16
`signaling, 15
`Intercom Auto Dial, 18
`
`K K
`
`ey phone systems, 14
`
`L L
`
`ast Numb