SpectraLink Link 3000 MCU Setup guide

Maintenance and Diagnostics
Link Wireless Telephone System
Link 3000 MCU
Part Number: 72-0059-04
Issue E

SpectraLink Corporation Maintenance and Diagnostics
Link WTS – Link 3000 MCU
Part Number: 72-0059-04-E.doc Page 2
NOTICE
SpectraLink Corporation has prepared this document for use by SpectraLink personnel and clients. The
drawings and specifications contained herein are the property of SpectraLink and shall be neither
reproduced in whole or in part without the prior written approval of SpectraLink, nor be implied to grant
any license to make, use, or sell equipment manufactured in accordance herewith.
SpectraLink reserves the right to make changes in specifications and other information contained in this
document without prior notice, and the reader should in all cases consult SpectraLink to determine whether
any such changes have been made.
The terms and conditions governing the sale of SpectraLink hardware products and the licensing of
SpectraLink software consist solely of those set forth in the written contracts between SpectraLink and its
customers. No representation or other affirmation of fact contained in this document including but not
limited to statements regarding capacity, response-time performance, suitability for use, or performance of
products described herein shall be deemed to be a warranty by SpectraLink for any purpose, or give rise to
any liability of SpectraLink whatsoever.
In no event shall SpectraLink be liable for any incidental, indirect, special, or consequential damages
whatsoever (including but not limited to lost profits) arising out of or related to this document, or the
information contained in it, even if SpectraLink has been advised, knew, or should have known of the
possibility of such damages.
Trademark Information
SpectraLink
LinkPlus
Link Wireless Telephone System
NetLink Telephony Gateway
NetLink Wireless Telephone
NetLink SVP Server
SpectraLink Voice Priority
ccLink Wireless Telephone System
are trademarks and registered trademarks of SpectraLink Corporation.
All other trademarks used herein are the property of their respective owners.
Maintenance and Diagnostics
Link WTS
Link 3000 MCU
System Documentation
© 2002 SpectraLink Corporation.
All Rights Reserved
Printed in the United States of America
SpectraLink Corporation
5755 Central Avenue
Boulder, CO 80301
Within the United States, dial
303.440.5330 or toll free
800.676.5465
Outside the U.S., dial
+1.303.440.5330
www.spectralink.com

SpectraLink Corporation Maintenance and Diagnostics
Link WTS – Link 3000 MCU
Part Number: 72-0059-04-E.doc Page 3
Note concerning the Master Control Unit:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
Note concerning shielded cable:
SpectraLink recommends the use of shielded cable for all external signal connections in order to maintain
FCC Part 15 emissions requirements.
Note concerning the Wireless Telephone and Base Stations:
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
WARNING Changes or modifications to this equipment not approved by SpectraLink Corporation may
cause this equipment to not comply with part 15 of the FCC rules and void the user’s authority to operate
this equipment.
WARNING SpectraLink products contain no user-serviceable parts inside. Refer servicing to qualified
service personnel.

SpectraLink Corporation Maintenance and Diagnostics
Link WTS – Link 3000 MCU
Part Number: 72-0059-04-E.doc Page 4
UL Information
This symbol on the nameplate means the product is listed by Underwriter’s
Laboratories, Inc. It is designed and manufactured to meet rigid U.L. safety
standards against X-radiation, fire, casualty, and electrical hazards.
The following are statements required for UL certification, related to safety procedures
that must be adhered to during installation.
Follow these general precautions while installing telephone equipment:
Never install telephone wiring during a lightning storm.
Never install telephone jacks in wet locations unless the jack is specifically designed
for wet locations.
Never touch uninsulated telephone wires or terminals unless the telephone line has
been disconnected at the network interface.
Use caution when installing or modifying telephone lines.
When installing Base Stations outside or in buildings other than the one containing the
System Controller, take the following precaution:
If wiring for a Base Station exits a building—whether to reach an outdoor Base Station
location or to reach a Base Station in another building—the wiring must be protected at
both ends by a Quick Clip Fuse from Illinois Tool Works, Linx Division, model number
SCP-2X2. The Quick Clip Fuse replaces the bridging clips on the 66 blocks for all four
connections to the non-internal Base Station.

SpectraLink Corporation Maintenance and Diagnostics
Link WTS – Link 3000 MCU
Part Number: 72-0059-04-E.doc Page 5
FCC Information
The Master Control Unit Complies with Part 68, FCC Rules
FCC Registration Numbers:
Link 3000: IYGUSA-7385Q-PX-T
Ringer Equivalence:
Link 3000: 0.3B
SpectraLink Corporation
Link 3000
Made in the USA
This equipment complies with Part 68 of the FCC Rules. On the back of this equipment is a label that
contains, among other information, the FCC Registration Number and Ringer Equivalence Number (REN)
for this equipment. If requested, this information must be given to the telephone company.
This equipment uses RJ-21 connectors.
The REN is useful to determine the quantity of devices you may connect to your telephone line and still
have all of those devices ring when your number is called. In most, but not all, areas, the sum of the RENs
of all devices connected to one line should not exceed five (5.0). To be certain of the number of devices
you may connect to your line, as determined by the REN, you should contact your local telephone company
to determine the maximum REN for your calling area.
If your telephone equipment causes harm to the telephone network, the telephone service may discontinue
your service temporarily. If possible, they will notify you in advance. But if advance notice isn’t practical,
you will be notified as soon as possible. You will be informed of your right to file a complaint with the
FCC.
Your telephone company may make changes in its facilities, equipment, operations or procedures that
could affect the proper functioning of your equipment. If they do, you will be notified in advance to give
you an opportunity to maintain uninterrupted telephone service.
If you experience trouble with this telephone equipment, please contact SpectraLink Corporation for
information on obtaining service or repairs.
SpectraLink Corporation
5755 Central Avenue
Boulder, CO 80301
303-440-5330
The telephone company may ask that you disconnect this equipment from the network until the problem
has been corrected or until you are sure that the equipment is not malfunctioning. There are no user
serviceable parts in this equipment.
This equipment may not be used on coin service provided by the telephone company. Connection to party
lines is subject to state tariffs.

SpectraLink Corporation Maintenance and Diagnostics
Link WTS – Link 3000 MCU
Part Number: 72-0059-04-E.doc Page 6
Industry Canada (IC) Notice
Notice:
The Industry Canada (IC) label identifies certified equipment. This certification means that the
equipment meets telecommunications network protective, operational, and safety requirements as
prescribed in the appropriate Terminal Equipment Technical Requirements document(s). The
department does not guarantee the equipment will operate to the user’s satisfaction.
Before installing this equipment, users should ensure that it is permissible to be connected to the
facilities of the local telecommunications company. The equipment must also be installed using an
acceptable method of connection. The customer should be aware that compliance with the above
conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be coordinated by a representative designated by the
supplier. Any repairs or alterations made by a user to this equipment, or equipment malfunctions,
may give the telecommunications company cause to request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical ground connections of the power
utility, telephone lines and internal metallic water pipe system, if present, are connected together.
This precaution may be particularly important in rural areas.
Caution: Users should not attempt to make such connections themselves, but should contact the
appropriate electric inspection authority, or electrician, as appropriate.
Notice: The Ringer Equivalence Number (REN) assigned to each terminal device provides as
indication of the maximum number of terminals allowed to be connected to a telephone interface.
The termination of an interface may consist of any combination of devices.
REN 0.3B
Approval Numbers:
Link 3000: 2128-9508 A
Warranty and Repair Service Center:
SpectraLink Corporation
5755 Central Avenue
Boulder, CO 80301
303-440-5330
DOC Spread Spectrum certification
Base Station Cert. No. 2128-K1373
Wireless Telephone Cert. No. 2128-K1374

SpectraLink Corporation Maintenance and Diagnostics
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Part Number: 72-0059-04-E.doc Page 7
Table of Contents
1. ABOUT THIS DOCUMENT 9
1.1 Contacting SpectraLink 9
1.2 Icons Used in this Document 9
1.3 Troubleshooting Overview 9
2. SYSTEM MAINTENANCE 11
2.1 Replace an Interface Module (Hot Swap) 11
2.2 Add a Wireless Telephone 12
2.3 Replace a Wireless Telephone 12
2.4 Delete a Wireless Telephone 13
2.5 Add a Base Station 14
2.6 Replace a Base Station 15
2.7 Delete a Base Station 15
2.8 Add a Shelf 16
2.9 Delete a Shelf 16
3. WIRELESS TELEPHONE PROBLEMS 17
3.1 Using the Link Wireless Telephones 17
3.2 No Extension/Wrong Extension Displayed 17
3.3 “No Svc” Displayed 18
3.4 No Dialtone / No Audio 18
3.5 No Handoff 19
3.6 Calls Ring on the Wrong Wireless Telephone 19
3.7 Multiple Wireless Telephones Not Working 19
4. BASE STATION PROBLEMS 21
4.1 Multiple Base Stations Not Working 21
4.2 Base Station LED not lit 21
4.3 Base Station LED Flashing Red and Green 22
4.4 Base Station Disabled 22
4.5 Base Station Will Not Download 24
4.6 Base Station LED Flashing Red 24
4.7 Base Station LED Solid Red or Yellow 24
4.8 Base Station LED Flashing Red, Yellow, Green 25

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Part Number: 72-0059-04-E.doc Page 8
5. TROUBLESHOOTING DURING START-UP PHASE 26
5.1 Boot ROM LEDs 26
5.2 Boot ROM Alarms 27
5.3 Downloads 27
5.4 Configuration Changes 27
6. TROUBLESHOOTING CARD ALARMS 28
6.1 System and Shelf Controller Card Status Indicators 28
6.2 Interface Module Status LEDs 30
6.3 Reading the Status LEDs 31
7. LED AND ALARM TROUBLESHOOTING TABLES 32
7.1 System Controller Card Alarm Matrix 32
7.2 System Controller Card Troubleshooting Matrix 33
7.3 Shelf Controller Card Alarms 38
7.4 Shelf Controller Card Troubleshooting Matrix 39
7.5 Interface Module Alarm Matrix 41
7.6 Interface Module Troubleshooting Matrix 43
7.7 T1 Alarms 46
8. TERMS AND ACRONYMS 48

SpectraLink Corporation Maintenance and Diagnostics
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Part Number: 72-0059-04-E.doc Page 9
1. About This Document
This document describes the procedures for troubleshooting, maintaining, and expanding
the Link Wireless Telephone System (Link WTS).
Additional information about the Link WTS can be found in the following SpectraLink
user manuals:
Installation - Part Number 72-0059-01
Operator's Console - Part Number 72-0059-02
LinkPlus Interface Guide - Part Number 72-0171-xx as appropriate for the PBX.
Facility Preparation - Part Number 72-0059-05
1.1 Contacting SpectraLink
SpectraLink wants every customer to have a successful installation. Please refer questions
to our Customer Support Hotline at [phone]. The Hotline is open Monday
through Friday, 7:00 AM to 6:00 PM Mountain Time.
1.2 Icons Used in this Document
This manual uses the following icons and conventions.
Caution! Follow these instructions carefully to avoid danger.


Note these instructions carefully.
NORM This typeface indicates a key, label, or button.
1.3 Troubleshooting Overview
The Link WTS software constantly monitors system components for problems. If a
problem is detected, the system will flag the problem with an alarm. Alarms are displayed
in two places:
Operator's Console - the Chk3000 program allows the administrator or technician to
display details about each system component. If the component is in an alarm state,
details about the alarm will display on the appropriate screen. See the Link WTS –
Link 3000 MCU: Operator's Console manual (72-0059-02) for more information.

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LEDs - The front panels of all system cards (System Controller, Shelf Controller, and
Interface Modules) have six LEDs: one red (labeled ALARM), and five green
(labeled 1-5) to indicate status, including alarm conditions. LED sequences,
descriptions, and recommended procedures are provided in the section on
Troubleshooting Alarm Codes for each type of card.

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Part Number: 72-0059-04-E.doc Page 11
2. System Maintenance
This section explains some common maintenance procedures.
2.1 Replace an Interface Module (Hot Swap)
Interface Modules can be removed and replaced without shutting the system down.
Interface Modules must be replaced with the same type of card.
To perform a “hot swap” of an Interface Module:
1. From the Operator’s Console, select F2, Port Card Status. Display the port card
to be swapped, so you can monitor its status during the process.
2. On the card to be replaced, move the Normal/Disable switch to the Disable
position. This locks the card and disables the Base Stations to prevent new calls
from starting, but does not drop active calls. Existing calls are allowed to
complete before the card is locked.
3. When the alarm light stops blinking and turns solid red, the card is idle. Verify
this on the Operator’s Console, all lines and Base Stations should show no
activity. If you unplug the card before it is idle, the system may alarm.
4. At the Operator’s Console, press ESC. This stops the Operator’s Console from
trying to monitor the card you are about to remove.
5. Unplug the 25 pair cable from the card.
6. Unscrew the card from the shelf and slide it out.
7. Slide the replacement Interface Module into the slot, until the card clicks into
place. Tighten the screws at the top and bottom of the card to secure it.
8. Connect the 25 pair cable to the card.
9. When the heartbeat LED sequence displays on the Interface Module (LED 1
flashes 1/3 of the time), select F2 on the Operator’s Console to verify the status of
the new card. It should be Running.

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2.2 Add a Wireless Telephone
Before adding a new Wireless Telephone, you must have a port location on the
demarcation block on the switch and a port location on the Link 3000 MCU Interface
Module. If no ports are available on the Link 3000 MCU, you must install another
Interface Module in the shelf. See Link WTS – Link 3000 MCU: Installation.
1. Connect the host telephone system port to the Link 3000 MCU Interface Module
port assigned to the new Wireless Telephone.
2. On the Operator’s Console, select F4, Port Card Configuration Display and
Administration.
3. Using the arrow keys or mouse, position the cursor on the port location to be
configured, and press Enter.
4. When the menu displays, scroll down to Edit Line, and press Enter.
5. At the pop-up menu, type the information for the Wireless Telephone.
Serial Number – the factory assigned serial number for this telephone, located
inside the battery compartment under the battery. Double check this number when
it is entered. If the Serial Number is entered incorrectly the telephone will not
function and will appear to be defective.
Note - (optional) user name or any other information. Do not enter double quotes
(“) in this field, an error message will display.
Extension/SPID - extension number or SPID. Must be numeric.
6. When information is correctly entered, select SAVE to save it.
7. To program the Wireless Telephone to display the correct extension number, hold
down the FCN key until Volume Level displays. Press the # > key (NEXT) until
EXTENSION displays on the Wireless Telephone. Press 0, then enter the correct
extension number. Press END when finished.
8. When the Wireless Telephone is turned ON, the extension will be displayed. Test
the new Wireless Telephones by placing a call to each one to verify that the
correct telephone rings.
2.3 Replace a Wireless Telephone
Use this procedure to replace a Wireless Telephone with a new Wireless Telephone.
1. On the Operator’s Console, select F4, Port Card Configuration Display and
Administration. Use the Search function to locate the Wireless Telephone to be
replaced, searching for the extension or the serial number.
2. Highlight the port location of the telephone and select Edit Line.
3. When the pop-up screen displays, replace the serial number of the old telephone
with the serial number of the new telephone.
4. Select SAVE to save the change.

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Part Number: 72-0059-04-E.doc Page 13
2.4 Delete a Wireless Telephone
Use this procedure to completely remove a Wireless Telephone from the system, without
replacing the telephone with another.
1. On the Operator’s Console, select F4, Port Card Configuration Display and
Administration.
2. Using the arrow keys or mouse, position the cursor on the port location of the
telephone to be deleted, and press Enter.
3. When the menu displays, scroll down to Delete Line, and press Enter.
4. Scroll to DELETE and press Enter.
5. If you do not plan to re-use the port on the Link WTS, remove the cabling for this
telephone between the host telephone system and the Link WTS’s demarc block.

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Part Number: 72-0059-04-E.doc Page 14
2.5 Add a Base Station
Before adding a new Base Station you should have a port location for the new equipment.
If no ports are available on the Link 3000 MCU, you must install another Interface
Module in the shelf. See Link WTS – Link 3000 MCU: Installation.
1. Install the new Base Station. See Link WTS – Link 3000 MCU: Installation.
2. On the Operator’s Console, select F4, Port Card Configuration Display and
Administration.
3. Using the arrow keys or mouse, position the cursor on the port location to be
configured, and press Enter.
4. When the menu displays, scroll down to Edit RCU (Base Station), and press
Enter.
5. At the pop-up menu, type the information for each Base Station.
Offset - Offset IDs manage the division of the frequency (spectrum) among the
Base Stations. To prevent interference, neighboring Base Stations require
different offset values. Each Base Station is assigned a unique two-digit offset.
Press Right Arrow to see a menu of choices.
For half-hop systems with up to 25 Base Stations, or whole-hop systems with
up to 50 Base Stations, number the Base Stations in order 1-25 or 1-50.
If the system has more Base Stations, the offset IDs must be reused. Consult
the map that was generated during system installation. Assign unique offsets
such that adjacent or nearby Base Stations do not share the same offset. When
selecting offset assignments, keep in mind through-floor penetration and the
Base Station’s proximity to windows.
Offset usage is summarized on the Show RCU Offset Reuse function from
F2 - Port Card State. This report shows how many times each Offset has
been used.
Isolated? - If this Base Station is isolated from all other Base Stations, enter Y.
An isolated Base Station is one that is located physically apart from other Base
Stations, therefore will never be heard during a Listen/Verify diagnostic.
Designating a Base Station as Isolated will disable the Listen Verify alarm for that
Base Station and avoid generating spurious alarms.
Note - (optional) type a short description of where the Base Station was installed
(a room or floor number, for example). Up to 30 characters. Do not enter double
quotes (“) in this field, an error message will display.
6. When information is correctly entered, select SAVE to save it.

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Part Number: 72-0059-04-E.doc Page 15
2.6 Replace a Base Station
To replace a Base Station, unplug the existing Base Station and plug in the new Base
Station.
The LED will blink red and green as the system software downloads to the
Base Station and the Base Station is tested.
When the LED blinks amber, the system is ready for operation.
When the LED blinks green, a Wireless Telephone has established a radio link
with that Base Station.
If the LED turns solid red, blinks red, or continues to blink red and green,
refer to Base Station Problems.
2.7 Delete a Base Station
Use this procedure to completely remove a Base Station without replacing it with a new
one.
1. On the Operator’s Console, select F4, Port Card Configuration Display and
Administration.
2. Using the arrow keys or mouse, position the cursor on the port location of the
Base Station to be deleted, and press Enter.
3. When the menu displays, scroll down to Delete RCU, and press Enter.
4. Scroll to DELETE and press Enter.
5. If you do not intend to move the Base Station to a new location, disconnect the
cabling for this Base Station from the demarc block.

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Part Number: 72-0059-04-E.doc Page 16
2.8 Add a Shelf
If the existing shelves in the MCU are not large enough to hold the required Interface
Modules, you must add a shelf to the system. The system can support 19 Expansion
Shelves.
1. Install the shelf. See Link WTS – Link 3000 MCU: Installation.
2. If you moved Interface Modules from one shelf into the new shelf, use the Move
Port Card function to modify the existing Interface Module configuration to
reflect the change.
3. Register the new Wireless Telephones and/or Base Stations on the new shelf. See
Add A Wireless Telephone and Add A Base Station.
2.9 Delete a Shelf
If you move or reconfigure your system, you may need to completely delete a shelf.
1. On the Operator’s Console, select F4, Port Card Configuration Display and
Administration.
2. If you are completely removing the Wireless Telephones and Base Stations from
this system, delete the Base Stations and Wireless Telephone by deleting each
Interface Module on the shelf using the Delete Port Card (Interface Module)
option.
3. If you are moving the Wireless Telephones and Base Stations from this shelf to
another, use the Move Port Card (Interface Module) option to designate the new
shelf location of the Interface Module. Note that you cannot move an Interface
Module to a slot which already contains configuration information. Also, the
Interface Module must be physically moved to the new slot and connected with a
cable in order for the module to become operational.
4. When all Interface Modules have been deleted or moved from the shelf, select F1
– Supervisor State Display. Select the Delete Cabinet (shelf) option to delete
the shelf.
5. After the shelf is deleted from the system you can physically remove it and its
cabling.

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Part Number: 72-0059-04-E.doc Page 17
3. Wireless Telephone Problems
3.1 Using the Link Wireless Telephones
The Link WTS is an in-building wireless communication system that allows hand-held
Wireless Telephones to communicate using the existing telephone system. Calls are sent
to and received by the Wireless Telephones via small radio transceivers called Base
Stations, located throughout the building or campus. When using and troubleshooting the
Wireless Telephones, consider the following concepts.
Call hand off – as the user moves through the facility, your conversation will be
“handed off” from one Base Station to another.
In range/Out of range – service will be disrupted if a user moves outside the
transmission area of the Link WTS. Service is restored if the user moves back within
range of a Base Station. If a call drops because a user moves out of range, the
Wireless Telephone will recover the call if the user moves back into range within a
few seconds.
Capacity – in areas of heavy use, the call capacity of a particular Base Station may
be filled. If this happens, the user can wait until another user terminates a call, or
move within range of another Base Station and try the call again. If a user is on a call
and moves into an area where capacity is full, it is the same as moving out of range of
a Base Station.
Transmission Obstructions – a thorough site survey was done prior to installation
to determine the best location for Base Stations for optimum transmission coverage.
However, small pockets of obstruction may still be present, or obstructions may be
introduced into the facility after system installation. This loss of service can be
restored by moving out of the obstructed area. Base Stations can also be added to
overcome obstructions.
3.2 No Extension/Wrong Extension Displayed
1. Hold down the FCN key until Volume Level display.
2. Press the #key twice until the display reads “Extension.”
3. Press
0, then enter the correct extension number.
4. Press END when finished.

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Part Number: 72-0059-04-E.doc Page 18
3.3 “No Svc” Displayed
The Wireless Telephone is either not registered, out of range, or can’t pick up a signal
from a Base Station.
1. Visually check to see if the telephone is within range of a Base Station where
other telephones are working.
2. From the Operator’s Console, search for the telephone’s serial number or
extension number to be sure it is properly registered.
3. If other telephones in the area are also not working, see Multiple Wireless
Telephones Not Working below.
3.4 No Dialtone / No Audio
If the Wireless Telephone has no dialtone, or if the user is unable to hear the other party’s
voice or heard echo or dead air.
1. Be sure the Wireless Telephone is powered on.
2. Be sure the No Svc icon turns off a few seconds after the Wireless Telephone is
powered on.
3. Swap the Battery Pack with a Battery Packfrom a functional Wireless Telephone.
If this corrects the problem, charge the Battery Pack.
4. Turn the Wireless Telephone off then on again, then test again for dial tone and
voice quality.
5. Move through several Base Station areas to be sure the Wireless Telephone is
within range of an operating Base Station.
6. Check for alarms on the System Controller, Shelf Controller, or Interface Module
cards (F1, Supervisor State or F2, Port Card State). If the Wireless Telephone
is connected through a digital interface, the system will show an alarm. If the state
is anything but idle, the Wireless Telephone is in alarm. If there are alarms, see
Troubleshooting Alarms section.
7. Check that the system connects when the user goes off-hook. On the Operator’s
Console, from theF2 - Port Card State screen, view the status of the Line when
the user goes off-hook.
8. Make sure the Wireless Telephone’s Interface Module is connected to a working
phone line. Use a telephone test set to check the line at the demarc block.
9. Check the cabling between the Interface Modules and the demarc block, and
between the demarc block and the telephone system ports. See Link WTS – Link
3000 MCU: Installation for more information.
10. Isolate the Wireless Telephone line on the PBX from the Link 3000 MCU.
Connect a wired telephone to the port to see if the wired telephone operates
properly.
11. Move the Wireless Telephone to a different port location and test again.

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Part Number: 72-0059-04-E.doc Page 19
3.5 No Handoff
If the user walks between Base Station coverage areas, the conversation is not handed off,
and the call is dropped.
1. Using another Wireless Telephone, confirm that both Base Stations are
operational.
2. Verify that the Wireless Telephone can hand off between other Base Stations.
3. On the Operator’s Console, from the Port Card State screen (F2) check the status
of the Base Stations. It is possible that the Base Stations have four calls (the
maximum) in progress. If the Base Station is handling three or fewer calls and
still drops the call, see Base Station Problems.
3.6 Calls Ring on the Wrong Wireless Telephone
The Wireless Telephone has probably not been registered correctly.
1. From the Operator’s Console, use the Search function to find the telephone’s
serial number and check its port location.
2. Trace the wires from the back of the Interface Module to the host telephone
system to be sure it is actually connected to that port location.
3. If the physical location is different, note the correct port location. From F4 - Port
Card Configuration Display and Administration, use the Edit Line function to
change the serial number on the correct port. If the port location is already in use
by another Wireless Telephone, you will need to delete the other telephone (using
Delete Line), then change the serial number on that port location to the serial
number of the new telephone.
3.7 Multiple Wireless Telephones Not Working
If several of the Wireless Telephones are not working there may be a problem with the
Interface Module that controls them, or with one or more Base Stations.
1. Check to see that the Wireless Telephones are correctly registered. See Link WTS
– Link 3000 MCU: Operator’s Console for instructions.
2. At the Operator’s Console, use the Search function to display details about the
Wireless Telephones (searching for serial number, extension, or user name). If
they are all connected to the same Interface Module, there may be a problem with
that Interface Module.
3. Try replacing the Interface Module with a different Module of the same type (see
Replacing Interface Modules.)
4. Check the cabling between the Interface Modules and the demarc block, and
between the demarc block and the telephone system ports. See Link WTS – Link
3000 MCU: Installation for more information.
5. If the problem persists, diagnose the Base Stations.

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Part Number: 72-0059-04-E.doc Page 20
4. Base Station Problems
The first step in diagnosing Base Station problems is to isolate the problem to the Base
Station. Be sure the problem is not limited to a single Wireless Telephone. When a
problem occurs with a Wireless Telephone, try the same procedure using another
telephone, or several telephones (see Wireless Telephone Problems.)
If all or several Wireless Telephones are affected, try the following troubleshooting
procedures.
If you try the following troubleshooting procedures and the Base Station still does not
work, return the unit to SpectraLink for service.
4.1 Multiple Base Stations Not Working
If several of the Base Stations are not working there may be a problem with the Interface
Module that controls them.
1. At the Operator’s Console, check for alarms on the Supervisor State (F1) and
Port Card State (F2) screens. Cards or components in alarm will have an
exclamation point (!). See Troubleshooting Alarms for more information.
2. Check to see that the Base Stations are correctly registered. See Link WTS – Link
3000 MCU: Operator’s Console for instructions.
3. If all of the Base Stations are connected to the same Interface Module, there may
be a problem with that Interface Module. Try replacing the Interface Module (see
Replacing Interface Modules) and re-testing the Base Stations.
4. Use a voltmeter to check for 48V DC on the Base Station wiring.
4.2 Base Station LED not lit
The Base Station is not receiving power. On the Port Card Status screen (F2) the status
may show Reset.
1. Be sure the RJ-45 connector is plugged into the Base Station.
2. Be sure the MCU is turned on.
3. With a voltmeter, check the 48V DC on the wiring between the MCU and the
Base Station.