Algo 8373 User manual

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 1 www.algosolutions.com
8373 Zone Paging Adapter
FW Version 1.5
Installation & Configuration
Order Codes
8373 Zone Paging Adapter

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 2 www.algosolutions.com
Table of Contents
IMPORTANT SAFETY INFORMATION ......................................................................................................8
ABOUT THE ALGO 8373 ZONE PAGING ADAPTER ...................................................................................9
TYPICAL APPLICATION .........................................................................................................................10
GETTING STARTED - QUICK INSTALL & TEST ......................................................................................... 11
INSTALLATION .....................................................................................................................................12
WEB INTERFACE...................................................................................................................................12
SIP PAGING: INTRODUCTION ............................................................................................................... 13
SIP PAGING: SINGLE SIP EXTENSION ....................................................................................................14
SIP PAGING: MULTIPLE SIP EXTENSIONS .............................................................................................. 15
SIP PAGING: 9 ZONES USING ONE AMPLIFIER ...................................................................................... 16
SIP PAGING: USING MULTICAST........................................................................................................... 18
MULTICAST PAGE ZONES ..................................................................................................................... 19
POLYCOMTM GROUP PAGING ...............................................................................................................20
WIRING CONNECTIONS........................................................................................................................21
NETWORK CONNECTION (FRONT)............................................................................................................21
LINE OUT XLR-MINI (FRONT)..............................................................................................................22
TERMINAL BLOCK LINE OUT (BACK) .........................................................................................................22
TERMINAL BLOCK RELAY OUT (BACK)....................................................................................................... 22
CHANNEL 1/2/3 (BACK) .......................................................................................................................22
AMP IN (BACK)..................................................................................................................................22
TERMINAL BLOCK COVER .......................................................................................................................22
BLUE LED INDICATORS ......................................................................................................................... 23
SIP...................................................................................................................................................23
CHANNEL 1/2/3 .................................................................................................................................23
RESET...................................................................................................................................................23
WEB INTERFACE LOGIN........................................................................................................................ 24
STATUS..............................................................................................................................................24
BASIC SETTINGS TAB –SIP....................................................................................................................25
SIP DOMAIN (PROXY SERVER)................................................................................................................25
PAGE EXTENSION .................................................................................................................................25
AUTHENTICATION ID ............................................................................................................................26
AUTHENTICATION PASSWORD.................................................................................................................26
BASIC SETTINGS TAB –FEATURES ........................................................................................................27
TEST TONE .........................................................................................................................................27
TEST SPEAKER VOLUME.........................................................................................................................27
PAGE SPEAKER VOLUME........................................................................................................................28

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 3 www.algosolutions.com
PAGE MODE .......................................................................................................................................28
PAGE TIMEOUT ...................................................................................................................................28
PAGE TONE ........................................................................................................................................28
G.722 SUPPORT..................................................................................................................................28
AUTOMATIC GAIN CONTROL (AGC).........................................................................................................28
OUTPUT LEVEL ....................................................................................................................................29
BASIC SETTINGS TAB –CHANNELS .......................................................................................................30
NUMBER OF ZONES ..............................................................................................................................31
MULTICAST ..........................................................................................................................................32
MULTICAST IP ADDRESSES .....................................................................................................................32
BASIC SETTINGS TAB - MULTICAST (MASTER SETTINGS) ......................................................................33
MULTICAST MODE (MASTER/SENDER SELECTED) .......................................................................................33
NUMBER OF ZONES (REGULAR MULTICAST TYPE SELECTED) ..........................................................................33
MULTICAST TYPE .................................................................................................................................33
SPEAKER PLAYBACK ZONES.....................................................................................................................34
BASIC SETTINGS TAB - MULTICAST (SLAVE SETTINGS) .......................................................................... 35
MULTICAST MODE (SLAVE SELECTED)....................................................................................................... 35
NUMBER OF ZONES (REGULAR MULTICAST TYPE SELECTED) ..........................................................................35
MULTICAST TYPE -REGULAR .................................................................................................................. 35
MULTICAST TYPE –POLYCOM GROUP PAGING/PUSH-TO-TALK...................................................................... 35
ADDITIONAL FEATURES TAB –MORE PAGE EXTENSIONS..................................................................... 37
ADVANCED SETTINGS TAB - NETWORK ................................................................................................38
PROTOCOL .........................................................................................................................................38
VLAN MODE...................................................................................................................................... 38
VLAN ID ...........................................................................................................................................39
VLAN PRIORITY ..................................................................................................................................39
DIFFERENTIATED SERVICES (6-BIT DSCP VALUE) .........................................................................................39
ADVANCED SETTINGS TAB –ADMIN .................................................................................................... 40
PASSWORD.........................................................................................................................................40
CONFIRMATION ...................................................................................................................................40
DEVICE NAME (HOSTNAME)...................................................................................................................41
INTRODUCTION SECTION ON STATUS PAGE ................................................................................................41
WEB INTERFACE SESSION TIMEOUT.......................................................................................................... 41
PLAY TONE AT STARTUP ........................................................................................................................41
LOG LEVEL..........................................................................................................................................41
LOG METHOD .....................................................................................................................................41
LOG SERVER .......................................................................................................................................41
WEB INTERFACE PROTOCOL ...................................................................................................................41
FORCE STRONG PASSWORD....................................................................................................................42
ALLOW SECURE SIP PASSWORD ..............................................................................................................42
SNMP SUPPORT (V1GET ONLY) ............................................................................................................. 42
ADVANCED SETTINGS TAB –TIME........................................................................................................43

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 4 www.algosolutions.com
TIME ZONE.........................................................................................................................................43
NTP TIME SERVERS 1/2/3/4.................................................................................................................43
NTP TIME SERVER SOURCE ....................................................................................................................43
DEVICE DATE/TIME..............................................................................................................................43
ADVANCED SETTINGS TAB –PROVISIONING........................................................................................ 45
MD5 CHECKSUM................................................................................................................................. 46
GENERATING A GENERIC CONFIGURATION FILE ............................................................................................ 46
GENERATING A SPECIFIC CONFIGURATION FILE.............................................................................................47
ADVANCED SETTINGS TAB –TONES .....................................................................................................48
UPLOADING CUSTOM AUDIO FILES ..........................................................................................................48
TONE FILES INCLUDED IN MEMORY .......................................................................................................... 49
ADVANCED SETTINGS TAB –ADVANCED AUDIO ..................................................................................50
DYNAMIC RANGE COMPRESSION (DRC) ...................................................................................................50
DYNAMIC RANGE COMPRESSION GAIN .....................................................................................................50
JITTER BUFFER RANGE...........................................................................................................................50
ALWAYS SEND RTP MEDIA ....................................................................................................................50
SPEAKER FILTER G.711 .........................................................................................................................51
SPEAKER FILTER G.722 .........................................................................................................................51
SPEAKER NOISE FILTER ..........................................................................................................................51
ADVANCED SETTINGS TAB –ADVANCED SIP ........................................................................................52
OUTBOUND PROXY ..............................................................................................................................52
STUN SERVER ....................................................................................................................................52
REGISTER PERIOD (SECONDS)..................................................................................................................52
KEEP-ALIVE METHOD............................................................................................................................ 52
DIFFERENT PORTS FOR EXTENSIONS .........................................................................................................53
SERVER REDUNDANCY FEATURE ..............................................................................................................53
BACKUP SERVER #1.............................................................................................................................. 53
BACKUP SERVER #2.............................................................................................................................. 53
POLLING INTERVALS (SECONDS)...............................................................................................................53
POLL ACTIVE SERVER ............................................................................................................................53
AUTOMATIC FAILBACK ..........................................................................................................................54
POLLING METHOD ...............................................................................................................................54
ADVANCED SETTINGS TAB –ADVANCED MULTICAST...........................................................................55
AUDIO SYNC (SLAVE MODE) ..................................................................................................................55
MASTER OUTPUT CODEC (MASTER MODE) ...............................................................................................55
MASTER OUTPUT PACKETIZATION TIME (MASTER MODE) ............................................................................56
ZONE DEFINITION ................................................................................................................................56
PAGE TONE AND PAGE VOLUME.............................................................................................................. 56
POLYCOM SLAVE TONES ........................................................................................................................57
SYSTEM TAB - MAINTENANCE..............................................................................................................58
DOWNLOAD CONFIGURATION FILE........................................................................................................... 58
RESTORE CONFIGURATION FILE ...............................................................................................................58
RESTORE CONFIGURATION TO DEFAULTS ...................................................................................................58

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 5 www.algosolutions.com
REBOOT THE DEVICE .............................................................................................................................58
METHOD............................................................................................................................................59
FIRMWARE IMAGE ...............................................................................................................................59
MD5 CHECKSUM................................................................................................................................. 59
SYSTEM –SYSTEM LOG ........................................................................................................................ 59
SPECIFICATIONS...................................................................................................................................60
FCC COMPLIANCE STATEMENT ............................................................................................................62

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 6 www.algosolutions.com
Important Safety Information
This product is powered by a certified limited power source (LPS), Power
over Ethernet (PoE); through CAT5 or CAT6 connection wiring to an IEEE
802.3af compliant network PoE switch. The product is intended for
installation indoors. All wiring connections to the product must be in the
same building. If the product is installed beyond the building perimeter or
used in an inter-building application, the wiring connections must be
protected against overvoltage / transient. Algo recommends that this
product be installed by a qualified electrician.
If you are unable to understand the English language safety information
then please contact Algo by email for assistance before attempting an
installation [e-mail].
Consignes de Sécurité Importantes
Ce produit est alimenté par une source d’alimentation limitée certifiée
(alimentation par Ethernet); des câbles de catégorie 5 et 6 joignent un
commutateur réseau à alimentation par Ethernet homologué IEEE 802.3af.
Le produit est conçu pour être installé à l’intérieur. Tout le câblage rattaché
au produit doit se trouver dans le même édifice. Si le produit est installé
au-delà du périmètre de l’édifice ou utilisé pour plusieurs édifices, le
câblage doit être protégé des surtensions transitoires. Algo recommande
qu’un électricien qualifié se charge de l’installation de ce produit.
Si vous ne pouvez comprendre les consignes de sécurité en anglais,
veuillez communiquer avec Algo par courriel avant d’entreprendre
l’installation au [e-mail].
Información de Seguridad Importante
Este producto funciona con una fuente de alimentación limitada (Limited
Power Source, LPS) certificada, Alimentación a través de Ethernet (Power
over Ethernet, PoE); mediante un cable de conexión CAT5 o CAT6 a un
conmutador de red con PoE en cumplimiento con IEEE 802.3af. El producto
se debe instalar en lugares cerrados. Todas las conexiones cableadas al
producto deben estar en el mismo edificio. Si el producto se instala fuera
del perímetro del edificio o se utiliza en una aplicación en varios edificios,
las conexiones cableadas se deben proteger contra sobretensión o
corriente transitoria. Algo recomienda que la instalación de este producto
la realice un electricista calificado.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 7 www.algosolutions.com
Si usted no puede comprender la información de seguridad en inglés,
comuníquese con Algo por correo electrónico para obtener asistencia antes
de intentar instalarlo: [e-mail].
Wichtige Sicherheitsinformationen
Dieses Produkt wird durch eine zertifizierte Stromquelle mit begrenzter
Leistung (LPS –Limited Power Source) betrieben. Die Stromversorgung
erfolgt über Ethernet (PoE –Power over Ethernet). Dies geschieht durch
eine Cat-5-Verbindung oder eine Cat-6-Verbindung zu einer IEEE 802.3af-
konformen Ethernet-Netzwerkweiche. Das Produkt wurde konzipiert für die
Installation innerhalb eines Gebäudes. Alle Kabelverbindungen zum
Produkt müssen im selben Gebäude bestehen. Wenn das Produkt jenseits
des Gebäudes oder für mehrere Gebäude genutzt wird, müssen die
Kabelverbindungen vor Überspannung und Spannungssprüngen geschützt
werden. Algo empfiehlt das Produkt von einem qualifizierten Elektriker
installieren zu lassenv.
Sollten Sie die englischen Sicherheitsinformationen nicht verstehen,
kontaktieren Sie bitte Algo per Email bevor Sie mit der Installation
beginnen, um Unterstützung zu erhalten. Algo kann unter der folgenden E-
Mail-Adresse erreicht werden: [e-mail].
安全须知
本产品由认证的受限电源（LPS），以太网供电（PoE），通过CAT5或CAT6线
路联接至IEEE 802.3af兼容的PoE网络交换机供电。本产品适用于室内或建筑物
周边安装。所有联接本产品的线路必须源自同一建筑物。本产品如需用于超出
建筑物周边范围或跨建筑物的安装，线路联接部分必须有过压和瞬态保护。
Algo建议本产品由专业电工安装。
如果您对理解英文版安全须知有问题，安装前请通过电子邮件和Algo联系，
[e-mail]。

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 8 www.algosolutions.com
Important Safety Information
EMERGENCY COMMUNICATION
If used in an emergency communication application, the 8373 Zone
Paging Adapter should be routinely tested. SNMP supervision is
recommended for assurance of proper operation.
DRY INDOOR LOCATION ONLY
The 8373 Zone Paging Adapter is intended for dry indoor locations
only. For outdoor locations Algo offers weatherproof speakers and
strobe lights.
CAT5 or CAT6 connection wiring to an IEEE 802.3af compliant
network PoE switch must not leave the building perimeter
without adequate lightning protection.
No wiring connected to the 8373 Zone Paging Adapter may
leave the building perimeter without adequate lightning
protection.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 9 www.algosolutions.com
About the Algo 8373 Zone Paging
Adapter
The 8373 Zone Paging Adapter creates multiple paging zones, while
interfacing between SIP-enabled phone system and traditional paging
amplifier. When answering an inbound call, the 8373 can route the
call’s audio to the amplifier, via an analog connector. One amplified
audio stream can then be fed back into the 8373 and sent to one or
more of the three speaker Channels at a time. It is important to note
that the 8373 doesn’t allow different audio streams to play on two
Channels simultaneously as it is designed to interface with a single
amplifier. To interface with multiple amplifiers, we recommend using
multiple Algo 8301 Paging Adapters instead.
The 8373 can register as a voice paging SIP extension with a hosted
or enterprise Communications Server supporting 3rd party SIP
endpoints. Multiple SIP paging extensions may also be registered on
the 8373, one for each zone in use.
Multicasting capabilities allow a SIP registered 8373 to page and
simultaneously stream multicast audio to other Algo devices. Only
one 8373 is required to register as a SIP extension when using
multiple adapters in a SIP environment.
Connection to the amplifier is made using a balanced and isolated
line level output provided as either an XLR-mini connection (front) or
pluggable terminal block for twisted pair wiring (back). The audio
level can be adjusted manually or set to a defined level independent
of input.
The 8373 Zone Paging Adapter is configured using central
provisioning features or by accessing a web interface using browsers
such as Google Chrome, Firefox, or Internet Explorer.
What is Included
8373 Zone Paging Adapter
Network Cable
Wall Mount Bracket
What is not Included
Optional 2504 Output XLR-Mini Female to Male
This Installation Guide (www.algosolutions.com/8373/guide)

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 10 www.algosolutions.com
Typical Application
The 8373 Zone Paging Adapter is typically used to connect an
existing paging amplifier to a UC environment either as a SIP
extension or multicast endpoint. The 8373 can relay the single
unique audio stream from the amplifier to one of the 3 speaker
channels, creating a “zoned” paging system.
The Line Output of the 8373 is connected directly to the dry audio
input on the amplifier with an input impedance between 600 Ohm
and 10 kOhm.
For amplifiers connected directly to the dry page port of an existing
telephone system, the 8373 will provide a very similar interface
providing both dry page audio and dry contact closure to activate the
amplifier (if required).
For amplifiers connected to a FXS port or ATA through a “telephone
answering device” then the 8373 will replace the answering device
and eliminate the need for a FXS port or ATA.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 11 www.algosolutions.com
Getting Started - Quick Install & Test
This guide provides important safety information which should be
read thoroughly before permanently installing the adapter.
1. Connect the 8373 Zone Paging Adapter to an IEEE 802.3af compliant
PoE network switch. The blue lights on the front will remain on until
boot up is completed –about 30 seconds.
2. After the blue lights turn off, press the reset switch (RST) to hear the
IP address over the Line Out port. The IP address may also be
discovered by downloading the Algo locator tool to find Algo devices
on your network: www.algosolutions.com/locator
3. Connect the adapter LINE-OUT to an input amplifier using the mini-
XLR connector (front) or pluggable terminal block (back).
4. Access the 8373 Zone Paging Adapter web page by entering the IP
address into a browser (Chrome, IE, Firefox etc) and login using the
default password algo.
5. Enter the IP address for the SIP server into the SIP Domain field
under the BASIC SETTINGS > SIP tab.
6. Enter the page SIP extension and password.
7. Make a call to the adapter by dialling the page SIP extension of the
adapter from a telephone. A prompt tone will be heard when the
8373 answers –press “1” to call zone 1, which will activate the relay
for Channel 1 based on the default settings.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 12 www.algosolutions.com
Installation
The 8373 is wall mountable in a horizontal orientation using the
supplied bracket.
Example installation on ½” drywall:
Use appropriate drywall anchors for #8 screws,
and pre-drill per anchor manufacturer’s
instructions. Insert 4 anchors into the wall, and
then attach bracket to wall anchors using #8
screws. Snap the 8373 into the bracket.
Connect the 8373 to a PoE network switch.
Connect the audio output of the 8373 to an amplifier input using
either the mini-XLR output (male pins) or pluggable terminal block.
The 8373 provides a dry audio output and dry contact closure.
An optional XLR output audio cable (Algo 2504) may be ordered for
audio amplifiers using standard XLR input connectors.
Web Interface
The 8373 Zone Paging Adapter is configurable using the web
interface or provisioning features.
After boot up the blue lights on the front will turn off and the adapter
will have obtained an IP address. If there is no DHCP server the 8373
Zone Paging Adapter will default to the static IP address
192.168.1.111.
The IP address can be heard over the Line Out port when the reset
switch (RST) is pressed. (Do not press this button during boot-up as
it will cause the device to reset to factory defaults). The IP address
may be discovered by downloading the Algo locator tool to find Algo
devices on your network: www.algosolutions.com/locator
Enter the IP address (eg 192.168.1.111) into a browser such as
Google Chrome, Firefox, or Internet Explorer (other than IE9). The
web interface should be visible and the default password will be algo
in lower case letters.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 13 www.algosolutions.com
SIP Paging: Introduction
The 8373 has only one audio output, and therefore can only support a
single unique audio stream at any given time. This is ideal when
connecting to a single zone amplifier that also only supports a single
audio path at a time. The Channel relays then allow the speakers to be
broken off into groups, creating a “zoned” paging system.
The 8373 can be registered as one or more SIP extensions with the
SIP phone system, and will auto-answer inbound calls to these
extensions, play a pre-announce tone, and allow voice paging until
disconnected.
The simplest scenario is to configure the 8373 with a single SIP
extension on the phone system, and then use the DTMF keys on the
phone to select the zone that you would like to page. An alternate
approach is to register multiple SIP extensions, one for each zone that
you wish to use, so that each can be dialed directly without the need
for the user to remember the different DTMF zone numbers. Both of
these scenarios are described in more detail in the examples below.
If a VLAN is used on your network, navigate to the Advanced
Settings Network tab to set VLAN options.
(Note, once the adapter is using VLAN you will need to be on the same
VLAN to access the web interface.)
There are a number of configurable adapter options:
Enable AGC (automatic gain control)
Customize pre-announce tone WAV file
The best voice paging quality and intelligibility will be obtained using
the G.722 wideband audio codec. Most current IP telephones support
G.722 which is sometimes referred to as “HD” voice or audio.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 14 www.algosolutions.com
SIP Paging: Single SIP Extension
Up to 50 zones can be assigned on each of the three 8373 Channels.
The 8373 will auto-answer an inbound call to the SIP extension, e.g.
1000, and a brief tone will prompt the caller to dial a DTMF key to
select the desired zone. For example, if zone 2 is assigned to Channel
2, dialing “2” will activate Channel 2 and provide audio to speakers
connected to this channel. If zone 2 is associated with channels 2 and
3, dialing “2” will activate both channels and play the audio on the
speakers associated with these 2 channels.
Note: DTMF codes for zones 10 and higher start with an “*”.
To register the adapter with a single SIP extension, use the Basic
Settings SIP tab in the web interface to enter the SIP Server IP
address, extension, username, and password. This information will be
available from the IT Administrator.
Specific zones can be assigned to Channels by going to the Basic
Settings Audio Output Relays tabs.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 15 www.algosolutions.com
SIP Paging: Multiple SIP Extensions
Multiple SIP extensions can also be registered on the 8373, one for
each zone in use, using the tab: Advanced Setting More Page
Extensions. This allows the advantage of dialing directly to a zone
without needing to enter DMTF, allowing the use of speed-dial keys.
Additional SIP licenses may be required by the SIP provider.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 16 www.algosolutions.com
SIP Paging: 9 Zones using One Amplifier
To create more than 3 zones, additional 8373’s may be connected to
the single amplifier via the AMP IN on the back of each of the 8373’s.
The first 8373 should be assigned as a Multicast Master, and the
remainder as Slaves. Each Slave relay channel can then be
independently assigned to different paging zones. Dialing the
Multicast Master can now activate up to 9 Channels, and play the
audio on all associated speakers.
Note: When using slave 8373’s in this configuration of multicast
combined with a single amplifier driving the slave 8373’s, the system
must be designed with only a single master device in order to ensure
that the audio being received from the amp matches the multicast
control signals seen at each slave.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 17 www.algosolutions.com
Up to 50 zones can be configured. The first nine “basic” zones are
available by default. Additional “expanded” zones can also be
enabled in the Basic Settings Multicast tab.
If the amplifier already supports three zones, and you wish to use all
three simultaneously, then three Algo 8301 Paging Adapters might
be the tool for the job instead.
Any combination of Algo SIP endpoints can be integrated using
multicast, or kept independent by registering additional SIP
extensions on each. For instance, in addition to a single 8373 driving
an amplifier and creating 3 speaker zones, any number of 8188
Ceiling Speakers can also be added as Multicast Slaves, and
automatically play the same audio as was sent to the amplifier &
speakers.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 18 www.algosolutions.com
SIP Paging: Using Multicast
Multicast can be used to integrate the 8373 with other Algo SIP
Endpoints to create a fully-integrated Paging solution.
Only the Multicast Master device is required to register as a SIP
extension when using multiple Algo devices in a SIP environment.
Thus, the slave adapters do not require SIP extensions and do not
need to register with the SIP Communication Server.
Each of the 3 relay channels on the 8373 can be assigned to any
zone, or group of zones, as described in the other examples above,
and likewise, each of the other Algo SIP endpoints can be assigned to
one or more zones. Any one of the devices can be the Master, and
the rest can be configured as Slaves. As usual, either a single SIP
extension (with DTMF selectable zone), or multiple SIP extensions
(one per zone) can be configured on the Master, depending on the
preference of the end user.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 19 www.algosolutions.com
Multicast Page Zones
The 8373 Zone Paging Adapter supports nine “basic” multicast zones.
These zones are defined by the multicast IP addresses.
Somewhat arbitrarily, these zones are defined below but may be
used in other ways. The important consideration is that there is a
priority hierarchy –streaming activity on a zone higher on the list will
be treated as a higher priority than a zone lower on the list –with
music being the lowest priority.
Priority
All Call
Zone 1
Zone 2
Zone 3
Zone 4
Zone 5
Zone 6
Music
In a scenario involving only one adapter registered as a SIP
extension, the multicast page zone can be selected by keypad input
using “DTMF Selectable Mode”.
Alternatively, several Algo SIP endpoints can be registered with SIP
extensions and each SIP endpoint set to multicast on a different
multicast zone. No keypad zone selection in that case is necessary –
the zones are defined by the SIP extension called.
“Expanded” zones can also be enabled, allowing up to 50 zones in
total. These have the same behaviours as the basic zones, but are
hidden by default to simplify the interface.
Note: DTMF codes for zones 10 and higher start with an “*”.

8373 Zone Paging Adapter (FW 1.5)
Document 91-00071 Algo Communication Products Ltd [phone]
2017-11-14 4500 Beedie St Burnaby BC Canada V5J 5L2 [email protected]
Page 20 www.algosolutions.com
PolycomTM Group Paging
The 8373 Zone Paging Adapter has been designed to support
Polycom Group Paging.
The 8373 Zone Paging Adapter can be added to a Polycom group
page so that voice paging is heard over Polycom telephone speakers
and overhead paging simultaneously.
Polycom Group Paging can be configured on the Basic Settings 
Multicast tab.
The 8373 Zone Paging Adapter may be accessed remotely via SIP
and may generate a multicast page within the LAN sending voice
page to both Algo paging endpoints and Polycom telephones. Audio
delay may be added to the 8373 Zone Paging Adapter to synchronize
with voice page over the Polycom telephone speakers.