Mitel ST24A User manual
Quick Install Guide
ST24A/ST48A
Voice Switches
Mitel Networks Corporation
350 Legget Dr.
Kanata, Ontario K2K 2W7
Canada
+1.844.937.6483
Introduction
About the ST24A/ST48A*
The
ST24A/
ST48A Voice Switches connect enterprise telephone extensions through an internal
IP network.
The switch provides connectivity through:
• One audio input port (3.5 mm stereo) for connecting to a music-on-hold source
• One audio output port (3.5 mm stereo) for connecting to a corporate paging system or
night bell. You can use an optional paging adapter to provide a balanced output as well as
a contact closure ideal for overhead paging systems. Refer to the Paging Adapter (PA-1)
Quick Install Guide for information about the Paging Adapter.
• Two RJ-45 10/100/1000 Mbps LAN connectors
• One DB-9 (female), RS-232C maintenance port (default 115,200 bps, 8 bits, no parity, 1
stop bit, no handshake) for serial communications
• USB port for logging/troubleshooting
• One or two RJ-21X ports for connections to analog extensions via a punch-down block or
patch panel
* This document also applies to ShoreTel branded models of the same model number.
The ST24A/ST48A Voice Switch package contains:
• ST24A or ST48A Voice Switch
• Power cord
• Adhesive rubber feet (for placement on a surface)
• Cable retainer(s) for an RJ-21 Telco cable(s) (a metal bracket with a Velcro strap)
Installation Equipment
To install the switch, you need the following equipment:
• AC surge protector for the power connection
• RJ-45 cable for connecting the switch to the local area network
• Music-on-hold source with a standard mini-headphone adapter (optional)
• Permanent earthing connector for grounding the device
• RJ-21 telephone cable(s) (female connector on end that is connected to the voice switch)
for analog port connections
• RJ-21 to RJ-11 patch panel(s) for connecting telephones
• #1 Phillips screwdriver
Choosing a Location
To ensure optimum operating conditions for the Voice Switch, verify the operating environment is
adequately ventilated, free of gas or airborne particles, and isolated from electrical noise.
Power
LED
USB
port
Audio
input
port
10/100/1000
Mbps Ethernet
port
RS-232C
maintenance
port
Status
LED
Audio
output
port
RJ-21X
port RJ-21X
port
Power
LED
USB
port
Audio
input
port
10/100/1000
Mbps Ethernet
port
RS-232C
maintenance
port
Status
LED
Audio
output
port
RJ-21X
port
Installation
Mounting the Voice Switch on a Flat Surface
Beforeplacingtheswitchonaatsurface,attachtheprovidedrubberfeettothebottomcornersof
the device. (You can stack up to three switches in a surface installation.)
Installation des Voice Switch (ache Oberäche)
ZurInstallationaufeinerachenOberächesindzuerstdiemitgeliefertenGummifüßeanden
EckendesGeräteszubefestigen.(BiszudreiGerätekönnenindieserWeiseaufeinandergestellt
werden.)
Attaching an Earthing Connector
To meet electrical safety requirements for proper grounding, you must connect a permanent
earthing protector between the Voice Switch and the wiring system earth ground.
1Connectagroundwire(#14AWGwireorlarger)tothescrewonthebackoftheunitandtothe
right of the product label.
2Connect the other end of the ground wire to the wiring system ground.
CAUTION: Always connect the permanent earthing connector before attempting to connect the
switch to a LAN segment and telecommunication lines.
Einen Erdungsleiter anschließen
UmdenelektrischenSicherheitsanforderungenfüreinekorrekteErdungnachzukommen,müssen
SieeinenpermanentenErdungsschutzzwischendemGerätundderErdedesKabelsystems
installieren.
1SchließenSieeinErdungskabel(Nr.14AWGodergrößer)andieSchraubeanderRückseite
desGerätsan,diesichrechtsnebendemProduktetikettbendet
2SchließenSiedasandereEndedesErdungskabelsandieErdedesKabelsystemsan.
VORSICHT:SchließenSieimmerzuerstdenpermanentenErdungsschutzan,bevorSiever-
suchen,dasGerätaneinLAN-SegmentundTelekommunikationsleitungenanzuschließen.
1 DenVoiceSwitchzurgewünschtenHöhehebenundmitvierstandardGestellschrauben
befestigen.
2 DieSchraubensindindieobereundunterePositionderÖseeinzufügen.
Esistsicherzustellendaßmindestens5cmAbstandzuallenBelüftunbgsöffnungenvorhandenist.
Installation des Switch (Gestell)
DerswitchistmitvierinstalliertenÖsenfürdieeinfacheInstallationineinem19ZollGestell
ausgerüstet.
1Lift the Voice Switch to the desired height and
attach it to the frame with four standard rack
screws.
2Insert the screws in both the upper and lower
positions on the rack-mount ears.
Verify there is at least two inches of open space
around all vent holes.
Installing the Voice Switch (Rack Mount)
The Voice Switch is equipped with pre-installed rack-mount ears for easy installation into a
standard 19-inch rack.
Connections
Powering on the Voice Switch
After connecting the switch to the network, power on the device by connecting it to an AC power
source.
1Plug an AC surge protector (not provided) into a grounded AC power source.
2Plug one end of the provided power cord into the receptacle on the back of the switch, then
plug the other end into the AC surge protector.
ThepowerLEDashesmomentarily,andremainslit.
• IftheLEDisnotlit,verifythepowercordispluggedintotheswitchandthepower source.
• IftheLEDcontinuesashing,thereisaninternalerror.Unplugtheswitchtopower it off, then
poweritbackon.Refertothe“ConguringSwitches”chapterintheMitel Connect System
Administration Guideforinformationonashpatterns,orcontacttechnicalsupportat
http://www.mitel.com/shoretel.
TheLANportsauto-sensethenetworktransportrate.Whenthenetworkconnectionis
established, the network LED indicates a transport rate of 10/100/1000 Mbps, and whether the
switch is receiving and transmitting data.
Optional Connections
After connecting the switch to the LAN, you can make optional connections, including input from a
music-on-hold source or output to your internal paging system.
Use an RJ-45 Ethernet cable to connect one or both of the LAN ports to the
network subnet.
Whilebothportscandetectandrespondtolinkstatus,theswitchcreatesa
data connection on only one LAN port at a time.
1Connect a music-on-hold source (CD player or other audio source)
to the audio input port.
2Connect your site’s paging system to the audio output port. You can
use a paaging adapter to facilitate paging connections. Refer to the
Paging Adapter (PA-1) Quick Install Guide for more information.
Servicing Procedures
WARNING:TheST24A/ST48AVoiceSwitchcontainsnointernaleldserviceableparts.Return
the equipment to Mitel for any required service procedures.
CAUTION:InternalfusesshouldbeservicedonlybyqualiedMitelpersonnel.Ifinternalfuses
are blown and require replacement, return the ST24A/ST48A Voice Switch to Mitel for service.
WARTUNGSVERFAHREN
ACHTUNG:DerST24A/ST48AVoiceSwitchenthältkeineinternenTeile,dievorOrtgewartet
werdenkönnen.SendenSiedasGerätanMitel,fallsWartungsarbeitenerforderlichseinsollten.
VORSICHT:InterneSicherungendürfennurvonqualiziertenMitel-Mitarbeiterngewartet
werden.WenninterneSicherungenausgetauschtwerdenmüssen,sendenSiedenST24A/
ST48AVoiceSwitchzurWartunganMitel.
Connecting the Voice Switch to the Network
Once the ST24A/ST48A Voice Switch is secured to a rack or placed on a surface, you can
connect it to the data network.
Configuration
Network Conguration
OncetheVoiceSwitchisinstalledandpoweredon,itmustbeconguredfornetworkoperations.
AswitchgetsanetworkcongurationbyassignmentfromaDHCPserver,ordirectlyfroman
administrator console (see procedure below).
NOTE:FormoreinformationonsettingupaswitchforautomaticcongurationbyaDHCPserver,
see the Mitel Connect Planning and Installation Guide.
Conguring the Voice Switch from a Console
1. Use a straight-through serial cable, DB9 male to DB9 female, or suitable USB-to-RS-232 serial
adapter to connect the switch maintenance port to a console PC.
2. On the PC or laptop, start a terminal emulation program and connect to the voice switch
using these serial communication settings: 115,200 bps, 8 data bits, no parity, one stop bit, no
handshake.
3. At the login prompt, enter:
Login: root
Password: ShoreTel
4. Type stclitobringupacongurationtooltosetnetworkparametersandviewcurrent
status.ThedefaultswitchcongurationistouseDHCPfornetworkparametersandautomatic
detectionofspeed,duplex,andowcontrolsettings.
5. Choose Menu Options and follow the onscreen instructions for setting network parameters,
including IP address, subnet mask, and gateway.
ST24A/ST48A Voice Switch RJ-21X Port Pinout
ST24A:Whenconnecteddirectlytoa24-portpatchpanel,thevoiceswitch’s24analogchannels
map to ports 1 through 24 on the patch panel as shown in the table below.
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Port No. 12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
X
Port Type EEEEEEEEEEEEEEEEEEEEEEEE
X
Pin No. 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
Pin Pairs Assignment
1,26 to 24,49 24 extension ports (E) for telephones
ST48A: Whenconnecteddirectlytoa24-portpatchpanel,thevoiceswitch’slower24analog
channels, 1 through 24, map to ports 1 through 24 on the patch panel connected to the left RJ-21X
connector.
The ST48A Voice Switch’s upper 24 analog channels, 25 through 48, map to ports 1 through 24 on
the right RJ-21X connector.
Connecting Telephone Lines
Use an RJ-21 cable and the provided cable retainer to connect the voice switch to the telephone
company’s punch-down block or patch panel.
CAUTION:Toreduceriskofre,useonlyNo.26AWGorlarger(e.g.24AWG)ULListedorCSA
certiedtelecommunicationlinecord.
VORSICHT:UmdasBrandrisikozuverringern,verwendenSienurTelekommunikationsleitungenNr.
26AWGodergrößer(z.B.24AWG)mitUL-oderCSA-Zulassung.
Fordetailedinformationonswitchportandtrunkconguration,seethe“ConguringSwitches”and
“ConguringTrunks”sectionsintheMitel Connect System Administration Guide.
1Use a #1 Phillips screwdriver to remove the two screws on
either side of the RJ-21X port, then place the retainer on the
port and re-attach the screws.
2Plug the Telco cable into the port, then pull the Velcro strap
tightly around the cable connector and fasten it.
3 Connect the other end of the Telco cable to the punch-down block or patch panel.
Switch Status & Specifications
Power LED
The blue power LED indicates the operating status of the switch.
Light Description
Steady The switch is powered on, and the internal software is running.
Flashing Continuousashingoratwo-ashpatternindicatesafailedinternalself-test(i.e.hardware
failure).Referto“ConguringSwitches”intheMitel Connect System Administration Guide
fordetailsonotherashpatterns.
Off The switch is not powered on, or the software is not running.
Status LED
The status LED provides voice switch activity information.
Color Activity Description
Off No ports are assigned.
Green Steady No ports are handling active calls.
Flashing-Fast At least one port is handling an active call.
Yellow
Steady No ports are handling active calls and at leaset one port is out of service.
Flashing-Slow The switch is not connected (or has lost connection) to an STl server.
Flashing-Fast At least one port is handling an active call and at least one port is out of service.
Network LEDs
Each LAN connector provides two LEDs (Link/Act and 10/100/1000) that indicates the activity and
communication speed of the connected network.
LED Color/State Description
Link/Act
Off There is no link present.
Green-Steady There is a link present, but no data packets are being transmitted or
received.
Green-Flashing There is a link present, and data packets are either being transmitted or
received.
10/100/1000
Off
Green
Yellow
A 10 Mbps link is present.
A 100 Mbps link is present.
A 1000 Mbps link is present.
Specications
Feature Specication
Dimensions 14.80 x 17.17 x 1.73 inches (376 x 436 x 44 mm)
Weight 12.0lb(5.45kg)
Inputvoltage 100-240VAC,50-60Hz
Power consumption 3A max.
Humidity 5-90%relativehumidity(non-condensing)
Operatingtemperature 0-50˚C
Copyright © 2018 Mitel Networks Corporation. All rights reserved. The Mitel word and logo are trademarks of Mitel Networks
Corporation. Any reference to third-party trademarks is for reference only and Mitel makes no representation of ownership of
these marks. 180602
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