Algo 8301 User manual

AL061-UG-GP308301-230508
Firmware Version 5.3.2
[e-mail]
July 25, 2023
Algo Communication Products Ltd.
4500 Beedie Street, Burnaby
V5J 5L2, BC, Canada
1-604-454-3790
www.algosolutions.com
8301 IP Paging Adapter & Scheduler
User Guide

8301 IP Paging Adapter & Scheduler
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©2023 Algois a registered trademark of Algo Communication Products Ltd.
All Rights Reserved. All other trademarks are the property of their respective owners. All specs are subject to change without notice.
Information Notices
Warning
Warning indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury
Caution
Caution indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate
injury and/or damage to the equipment or property
Important
Important indicates a key piece of updates, information, and instructions that need to be followed for correct
and safe use of the device
Note
Note indicates useful updates, information, and instructions that should be followed
Tips & Tricks
Tips & Tricks indicate helpful instructions that could help you with your device
Disclaimer
The information contained in this document is believed to be accurate in all respects but is not warranted by Algo. The information
is subject to change without notice and should not be construed in any way as a commitment by Algo or any of its affiliates or
subsidiaries. Algo and its affiliates and subsidiaries assume no responsibility for any errors or omissions in this document. Revisions
of this document or new editions of it may be issued to incorporate such changes. Algo assumes no liability for damages or claims
resulting from any use of this manual or such products, software, firmware, and/or hardware.
No part of this document can be reproduced or transmitted in any form or by any means –electronic or mechanical –for any
purpose without written permission from Algo.
For additional information or technical assistance in North America, please contact Algo’s support team:
Algo Technical Support
1-604-454-3792
[email protected]

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Table of Contents
1General .............................................................................................................................................................................................1
1.1 Introduction .............................................................................................................................................................................. 1
2Setup and Installation.......................................................................................................................................................................1
2.1 Getting Started –Quick Install and Test ................................................................................................................................... 2
2.2 Installation................................................................................................................................................................................. 2
2.2.1 Programming and Configuration.................................................................................................................................... 3
3Applications ......................................................................................................................................................................................4
3.1 Connecting Paging Amplifier to UC Environment ..................................................................................................................... 4
3.2 Notification................................................................................................................................................................................ 4
3.3 Scheduling................................................................................................................................................................................. 4
3.4 Multicasting............................................................................................................................................................................... 4
4Features............................................................................................................................................................................................5
4.1 SIP Paging: Registering an 8301 Device .................................................................................................................................... 5
4.2 SIP Paging: Multiple Algo SIP Endpoints (Using Multicast)....................................................................................................... 5
4.3 SIP Paging: Multiple Algo SIP Endpoints (Using Multicast)....................................................................................................... 6
4.4 Background Music Streaming ................................................................................................................................................... 6
4.5 Multicast Page Zones ................................................................................................................................................................ 6
4.6 SIP Ring Event............................................................................................................................................................................ 8
4.7 SIP Activated Notification Alerts ............................................................................................................................................... 8
4.8 TLS for SIP Signaling and Provisioning....................................................................................................................................... 8
4.8.1 Uploading Public CA Certificates to Algo SIP Endpoints................................................................................................. 9
4.8.2 HTTPS Provisioning......................................................................................................................................................... 9
4.8.3 Securing SIP Signaling (and RTP Audio)........................................................................................................................ 11
5Wiring Connections ........................................................................................................................................................................13
5.1 Connecting Input Devices to 8301 .......................................................................................................................................... 13
5.2 Blue LED Indicators.................................................................................................................................................................. 17
5.3 Reset........................................................................................................................................................................................ 17
6Web Interface.................................................................................................................................................................................18
6.1 Stats......................................................................................................................................................................................... 18
6.1.1 Device Status ................................................................................................................................................................ 18
6.2 Basic Settings........................................................................................................................................................................... 19
6.2.1 SIP ................................................................................................................................................................................. 19
6.2.2 Features........................................................................................................................................................................ 22
6.2.3 Multicast....................................................................................................................................................................... 25
6.3 Multicast (Transmitter/Sender Settings) ................................................................................................................................ 27
6.4 Multicast (Receiver Settings) .................................................................................................................................................. 30
6.5 Additional Features................................................................................................................................................................. 32
6.5.1 Input/Output ................................................................................................................................................................ 32

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6.5.2 Emergency Alerts.......................................................................................................................................................... 39
6.5.3 More Page Extensions .................................................................................................................................................. 43
6.5.4 More Ring Extensions................................................................................................................................................... 44
6.6 Scheduler TAB ......................................................................................................................................................................... 45
6.6.1 Calendar........................................................................................................................................................................ 45
6.6.2 Schedules...................................................................................................................................................................... 46
6.6.3 Data .............................................................................................................................................................................. 47
6.7 Advanced Settings................................................................................................................................................................... 48
6.7.1 Network........................................................................................................................................................................ 48
6.7.2 Admin ........................................................................................................................................................................... 52
6.7.3 Users............................................................................................................................................................................. 56
6.7.4 Time.............................................................................................................................................................................. 56
6.7.5 Provisioning .................................................................................................................................................................. 58
6.7.6 Advanced Audio............................................................................................................................................................ 61
6.7.7 Advanced SIP ................................................................................................................................................................ 63
6.7.8 Advanced Multicast...................................................................................................................................................... 67
6.8 System..................................................................................................................................................................................... 69
6.8.1 Maintenance................................................................................................................................................................. 69
6.8.2 Firmware....................................................................................................................................................................... 71
6.8.3 File Manager................................................................................................................................................................. 72
6.8.4 Tones ............................................................................................................................................................................ 73
6.8.5 System Log.................................................................................................................................................................... 74
6.9 Logout...................................................................................................................................................................................... 74
7Specifications..................................................................................................................................................................................75
8FCC Compliance Statement............................................................................................................................................................77
Tables
Table 1: 8301 Specification Table ............................................................................................................................................................75
Figures
Figure 1: Wall Mount .................................................................................................................................................................................2
Figure 2: Using DTMF Selectable Mode.....................................................................................................................................................7
Figure 3: Using Multiple SIP Extensions.....................................................................................................................................................8
Figure 4: Use Case Wiring Diagram..........................................................................................................................................................13
Figure 5: 8301 Relay Input .......................................................................................................................................................................13
Figure 6: 1202 Call Button Wiring ............................................................................................................................................................14
Figure 7: 1203 Call Switch Wiring.............................................................................................................................................................14
Figure 8: 1204 Volume Control Switch Wiring.........................................................................................................................................14
Figure 9: 1205 Audio Interface Wiring.....................................................................................................................................................15

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Figure 10: 8301 Paging Adapter & Scheduler Front View........................................................................................................................15
Figure 11: 8301 Paging Adapter & Scheduler Back View.........................................................................................................................15
Figure 12: Status.......................................................................................................................................................................................18
Figure 13: Basic Settings →SIP...............................................................................................................................................................20
Figure 14: Basic Settings →Features.......................................................................................................................................................22
Figure 15: Multicast transmitter mode settings ......................................................................................................................................27
Figure 16: Multicast receiver mode settings............................................................................................................................................30
Figure 17: Input settings ..........................................................................................................................................................................33
Figure 18: 1203 Call Switch ......................................................................................................................................................................34
Figure 19: 1202 Call Button –the insert card is interchangeable............................................................................................................34
Figure 20: 1204 Volume Control ..............................................................................................................................................................35
Figure 21: 1205 Audio Interface...............................................................................................................................................................35
Figure 22: Emergency Alerts ....................................................................................................................................................................39
Figure 23: More page extensions.............................................................................................................................................................43
Figure 24: More ring extensions ..............................................................................................................................................................44
Figure 25: Network settings.....................................................................................................................................................................48
Figure 26: Admin settings ........................................................................................................................................................................52
Figure 27: Users settings..........................................................................................................................................................................56
Figure 28: Time settings...........................................................................................................................................................................57
Figure 29: Provisioning settings ...............................................................................................................................................................58
Figure 30: Advanced audio settings .........................................................................................................................................................61
Figure 31: Advanced SIP Setting...............................................................................................................................................................63
Figure 32: Advanced multicast - transmitter settings..............................................................................................................................67
Figure 33: Maintenance settings..............................................................................................................................................................69
Figure 34: Firmware settings....................................................................................................................................................................71
Figure 35: File manager settings ..............................................................................................................................................................72
Figure 36: Tones settings .........................................................................................................................................................................73
Figure 37: System log settings..................................................................................................................................................................74

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IMPORTANT WARNING AND SAFETY INFORMATION
Important Notice
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 is
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 suppor[email protected].
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 suppor[email protected].
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.
Si usted no puede comprender la información de seguridad en inglés, comuníquese con Algo por correo electrónico para obtener
asistencia antes de intentar instalarlo: [email protected].
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.

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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:
[email protected].
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. [email protected].
EMERGENCY COMMUNICATION
If used in an emergency communication application, the 8301 IP Paging Adapter & Scheduler should be routinely tested. SNMP
supervision is recommended for assurance of proper operation. Contact Algo for other methods of operational assurance.
DRY INDOOR LOCATION ONLY
The 8301 IP Paging Adapter & Scheduler 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 (PoE) compliant network PoE switch must not leave the building perimeter
without adequate lightning protection.
No wiring connected to the 8301 IP Paging Adapter & Scheduler may leave the building perimeter without adequate lightning
protection.

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1GENERAL
1.1 Introduction
Algo’s 8301 IP Paging Adapter & Scheduler is a SIP-compliant, multicast-capable endpoint device for integrating
consumer, commercial, and professional audio amplifiers into an IP-based Unified Communication (UC) environment
for voice paging and notification. Emulating a page port similar to what is found on legacy PBX or key systems, the
8301 connects directly to traditional analog amplifiers, offering a simple and easy interface to a VoIP phone system.
The 8301 uses a balanced and isolated line level output that reduces hum and which can connect with any amplifier
with an input impedance between 600 Ohm to 10 kOhm.
The 8301 also includes a scheduler, synchronized to NTP, to provide scheduled bells, tones, and customer service or
emergency announcements for schools, retail shops, manufacturing facilities, and healthcare institutions. 1 GB of
memory is available in the device to store audio files, which can be played via the 8301 Line Out and, if desired, as a
multicast to other Algo speakers, paging adapters, and display speakers.
As a 3rd-party, SIP-compliant device, the 8301 is designed to seamlessly integrate into most leading IP-based UC and
Mass Notification platforms. The 8301 is easily configured using central provisioning features or by accessing the web
interface via a web browser.
The 8301 supports three types of extensions, page, ring, and emergency alerts. The different types of extensions are
assigned by entering the SIP credentials on the correct section in the configuration portal. Page extensions by nature
auto-answer and open a voice path, allowing for live announcements. Ring extensions don't answer the incoming call,
instead they play a configurable pre-recorded announcement. This is traditionally used as a loud ringer/night bell.
Lastly, emergency alert extensions are used to communicate critical situations. They use customizable pre-recorded
announcements and are generally configured to loop over the announcement until it is cancelled. These extensions
can be registered simultaneously but note that some systems limit devices to a single registration.
2SETUP AND INSTALLATION
What is Included
The following items are included with the purchase of this
device:
•8301 Paging Adapter & Scheduler
•Wall mount bracket and screws
•Network cable
•Two (2) pluggable terminal blocks for relay input and
output
•Flat head screwdriver
•Getting Started Sheet
What is Not Included
The following items are not included with the purchase of this
device:
•Optional Wall Switch (Algo 1202, 1203, 1204, 1205)
•Optional 2504 Output Cable: XLR-Mini Female to XLR
Male
•Optional 2505 Input Cable: XLR-Mini Male to XLR
Female

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2.1 Getting Started –Quick Install and Test
Important
This guide provides important safety information which should be read thoroughly before permanently
installing the product.
1. Connect the 8301 Paging Adapter & Scheduler to an IEEE 802.3af compliant PoE network switch or PoE Injector.
The blue lights on the front will remain on until boot up is completed –about 60 seconds.
2. After the blue lights turn off, press the reset switch (RST) to hear the IP address over the analog outputs (e.g.,
headset can be connected to the green Aux output port). The IP address may also be discovered by downloading
the Algo locator tool or a third-party network scanner to find Algo devices on your network:
www.algosolutions.com/locator. Algo device's MAC address starts with 00:22:ee.
3. Connect the adapter Line Out to an amplifier using the mini-XLR connector or pluggable terminal block.
4. Access the 8301 Paging Adapter & Scheduler web page by entering the IP address into a browser (e.g., Chrome,
Firefox, or Edge) and login using the default password algo.
5. Enter the IP address or the domain name for the SIP server into the SIP Domain field under the Basic Settings →
SIP tab.
6. Enter the credentials (SIP Extension, Authentication ID, and Password) for the Page and/ or Ring extension. Leave
the credentials blank for either extension if there is no intended use to have both registered.
Note
The Authentication ID may also be called Username for some SIP servers, and in some cases may be the same as
the SIP extension.
7. Verify the extension is properly registered with the SIP server in the Status tab. Ensure the SIP Registration is
“Successful”.
8. Make a call to the adapter by dialing the registered SIP extension of the adapter from a telephone.
2.2 Installation
The 8301 is wall mountable in a horizontal orientation using the supplied bracket.
Figure 1: Wall Mount
Example installation on 1/2” 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 8301 into
the bracket.

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2.2.1 Programming and Configuration
The 8301 is configurable using the web interface or provisioning features.
After booting 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 8301 will default to the static IP address 192.168.1.111.
Press the reset switch (RST) to hear the IP address over the analog outputs (e.g., headset can be connected to the
green output 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.
Enter the IP address (e.g., 192.168.1.111) into a browser such as Chrome, Firefox, or Edge. The web interface should
be visible, and the default password will be algo in lower case letters.

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3APPLICATIONS
3.1 Connecting Paging Amplifier to UC Environment
The 8301 Paging Adapter & Scheduler is typically used to connect an existing paging amplifier to a UC environment
either as a SIP extension or multicast endpoint for voice paging, emergency alerting, night bell / loud ringing, bell
scheduling and playing music. It provides a hybrid voice paging solution to integrate analog speaker infrastructure and
multicast to Algo IP speakers, strobe lights and paging adapters, in addition to multicast supported IP telephones.
The Line output of the 8301 is connected directly to the dry audio input on an 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 8301 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 of ATA through a “telephone answering device”, the 8301 will replace the
answering device and eliminate the need for a FXS port or ATA. Please note the 8301 does not provide a FXS port
interface.
The 8301 may also be configured as a multicast transmitter to a set of IP endpoints, such as other Algo IP endpoints
and certain multicast-capable IP phones.
3.2 Notification
The 8301 is often used for notification alerting for emergency (e.g., lockdown, evacuation, reverse evacuation), safety
(e.g., medical, workplace accident), security events (e.g., OSHA or similar workplace regulations).
3.3 Scheduling
The 8301 includes a calendaring functionality synchronized to NTP and can be used to schedule school bells, play
automated announcements for retail and healthcare, and notify workplace shift changes and breaks.
3.4 Multicasting
The 8301 can be used as the central multicasting device in Algo endpoint deployments where it is desired to keep the
central multicasting device placed in a secure closet or location away from traffic areas.

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4FEATURES
4.1 SIP Paging: Registering an 8301 Device
The 8301 Paging Adapter & Scheduler can be registered as a 3rd-party SIP extension with a hosted or enterprise
Communications Server supporting 3rd-party SIP endpoints.
To register the adapter with the SIP server, use the Basic Settings →SIP tab in the web interface to enter the
Communication Server IP address/domain name, extension, username, and password. This information will be
available from the IT Administrator.
If VLANs are used, 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.)
The adapter may now be accessed by dialing its assigned extension from a telephone, device, or client. The adapter
will auto-answer, play the default pre-announce tone, and allow voice paging until disconnected.
There are several configurable adapter options, such as:
•Increase or Decrease Volume
•Enable AGC (automatic gain control)
•Ambient noise compensation
•Customize pre-announce tone file
•Passcode protection
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.
4.2 SIP Paging: Multiple Algo SIP Endpoints (Using Multicast)
Multicast features in the 8301 Paging Adapter & Scheduler require that only the first adapter be registered as a SIP
extension. Additional Algo IP endpoints, including any combination of paging adapters, speakers, and visual alerters,
may be added as multicast Receivers receiving a stream from the SIP registered Transmitter adapter, provided that
only a single audio stream will be active at any given time across any or all of the devices. If multiple unique audio
streams are needed simultaneously more than one Transmitter device will be required.
The adapter configured as the transmitter will simultaneously stream audio to the Receiver adapters. The Receiver
adapters do not require SIP extensions and do not need to register with the SIP Communication Server.
To enable multicast streaming from the Transmitter adapter, go to the web interface and navigate to the Basic
Settings →Multicast tab. Choose multicast mode ‘Transmitter (Sender)’ and pick ‘All Call’for the Transmitter single
zone.
To enable multicast monitoring in the Receiver endpoints, go to the web interface for each endpoint and navigate to
the Basic Settings →Multicast tab. This time though, choose multicast mode ‘Receiver (Listener)’. There is no need to
select a zone as the endpoint will monitor the ‘All Call’ zone IP address by default.

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The page pre-announce tone is generated from the Transmitter. The speaker volume can be increased or decreased
for each multicast Receiver individually.
Note
See “Basic Setting Tab –Multicast” section below for more configuration options and instructions.
4.3 SIP Paging: Multiple Algo SIP Endpoints (Using Multicast)
In some cases, it may be desirable for every adapter to have a SIP extension. Multicast may still be used to page
multiple Algo IP endpoints, but each endpoint can also be called individually or generate a call when appropriately
configured. An Algo IP endpoint configured as a Multicast Receiver will give highest priority to the SIP extension(s)
registered.
Communication servers capable of dialing multiple SIP extensions simultaneously for paging may create zones by
calling “paging groups” to page telephone speakers in conjunction with speaker endpoints. Certain IP phones are also
multicast capable. These can be configured similarly to Algo IP endpoints in receiver mode to participate in the desired
zones.
4.4 Background Music Streaming
The 8301 Paging Adapter & Scheduler, set as a Multicast transmitter, can stream background music to other Algo
Receiver devices on the network from a music source connected to the 8301’s AUX Input. Note music may
simultaneously be streamed through the local outputs.
When multicasting music, ensure that Automatic Gain Control (AGC) is ‘Disabled’ in Basic Settings →Features tab on
all the receiver devices. Meanwhile, on the Multicast sender device, select ‘G.722’ or 'Opus' for the Sender Output
Codec setting in Advanced Settings →Advanced Multicast tab.
4.5 Multicast Page Zones
The 8301 IP Paging Adapter & Scheduler supports nine ‘basic’ multicast zones. These zones are defined by the
multicast IP addresses.
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 down
on the list –with music being the lowest priority (multicast receiver side). The multicast transmitter side treats event
priority based on the event itself, not the zone. Contact Algo support for more details.
•Priority
•All Call
•Zone 1
•Zone 2
•Zone 3
•Zone 4
•Zone 5
•Zone 6
•Music
There are two options for Paging to multiple zones: ‘DTMF Selectable Mode’ or via multiple page extensions.

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The ‘DTMF Selectable Mode’ offers a dynamic page zone selection and requires only the Sender device to have a
registered SIP Extension. To page, dial the SIP extension of the Sender device and then dial the desired DTMF page
zone (e.g., 1, 2, etc.) on the keypad. DTMF digits and their corresponding zone numbers are available in the Advanced
Settings →Advanced Multicast tab.
Note
DTMF codes for zones 10 and higher start with an “*”.
Figure 2: Using DTMF Selectable Mode
Alternatively, multiple SIP extensions can be registered on the Sender device. Each extension is mapped to a unique
zone, allowing zones to be called directly (for instance from speed-dial keys) without the use of DTMF. See Additional
Features →More Page Extensions tab.

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Figure 3: Using Multiple SIP Extensions
‘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.
4.6 SIP Ring Event
Set Monitoring Mode to ‘Monitor "Ring" event on registered SIP extension’ on the Basic Settings →SIP tab. When a
call is made to the SIP extension the 8301 IP Paging Adapter & Scheduler will play the selected audio file from memory
(it will not answer the call). Often, the 8301 will be part of a hunt group or ring group to ring in conjunction with a
telephone.
4.7 SIP Activated Notification Alerts
In addition to voice paging, the 8301 IP Paging Adapter & Scheduler can play audio files for emergency, safety, and
security announcements, customer service, shift changes, etc.
Audio files can be stored in the device’s memory and played over a speaker in response to an event such as an
inbound call, relay input, or automated schedule, as well as multicast to other Algo SIP endpoints on the network. See
Additional Features →Emergency Alerts and Additional Features →Input / Output tabs for more details.
4.8 TLS for SIP Signaling and Provisioning
Algo devices that support firmware 1.6.4 or later support Transport Layer Security (TLS). This feature adds security by
ensuring that Algo products can trust the hosted SIP server. This is useful for when third-party devices or attackers
may try to intercept, replicate, or alter Algo products and try to connect to the server. TLS protocol will ensure that
third parties cannot read/modify any actual data. Previously, security was less of a concern because phone systems

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were on isolated networks, but hosted services are becoming increasingly more common. Using a hosted SIP service
requires traffic to be sent over the public internet and thus much more susceptible to attacks. Signed certificates are
important pieces in the operation of Algo devices to ensure the security, integrity, and privacy of device
communication. Algo components that use TLS are Provisioning and SIP Signaling.
Algo devices come pre-loaded with certificates from a list of trusted certificate authorities (CA), which are installed in
the hardware at the time of manufacture. Note these pre-installed trusted certificates are not visible to users and are
separate from the ‘certs’ folder.
The TLS handshake happens to make sure that the client and server can trust each other, and once that trust is
established, the two parties can freely send encrypted data and decrypt any data that they receive. After the TLS
handshake process is complete, a TLS session is established, and the server and client can then exchange messages
that are symmetrically encrypted with a shared (pre-sender) secret key.
For further details reference the Algo TLS guide for SIP Signalling and HTTPS Provisioning.
4.8.1 Uploading Public CA Certificates to Algo SIP Endpoints
If the particular CA Certificate is not installed by factory, you can easily upload your own. To install the public CA
certificate on the Algo 8301, follow the steps below:
1. Obtain a public certificate from your Certificate Authority (Base64 encoded X.509 .pem, .cer, or .crt).
2. In the web interface of the Algo device, navigate to the Advanced Settings →File Manager tab.
3. Upload the certificate files into the 'certs/trusted' directory. Click the Upload button in the top left corner of the
file manager and browse to the certificate.
Reach out to s[email protected] to get the complete list of trusted certificate authorities loaded from
factory.
For SIP TLS, if the 'Validate Server Certificate' option is enabled in Advanced Settings →Advanced SIP tab, then the
device will validate the SIP server against common certificate authorities. To validate against additional certificates,
use the System →File Manager tab to upload a Base64 encoded X.509 certificate file in .pem, .cer, or .crt format to
the 'certs/trusted' folder.
For Provisioning, if HTTPS is selected and the 'Validate Server Certificate' option is enabled in the Advanced Settings
→Provisioning tab, then the device will validate the server against common certificate authorities. To validate against
additional certificates, use the System →File Manager tab to upload a Base64 encoded X.509 certificate file in .pem,
.cer, or .crt format to the 'certs/trusted' folder.
4.8.2 HTTPS Provisioning
Provisioning can be secured by setting the ‘Download Method’ to ‘HTTPS’ (under the Advanced Settings →
Provisioning tab). This prevents configuration files from being read by an unwanted third-party. This resolves the
potential risk of having sensitive data stolen, such as admin passwords and SIP credentials.

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Important
To verify the server ‘Enable’ the ‘Validate Server Certificate’ option. This then checks if the certificate that is
provided by the server is signed by any of the CAs included in the list of trusted CAs (used by the Debian
infrastructure and Mozilla browsers). If we receive a certificate signed by any of these CAs, then that server will
be trusted.
The ‘Validate Server Certificate’ parameter can also be enabled through provisioning:
Prov.download.cert = 1

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4.8.3 Securing SIP Signaling (and RTP Audio)
SIP signalling is secured by setting ‘SIP Transportation’ to ‘TLS’ (under the Advanced Settings →Advanced SIP tab). SIP
transportation refers to the underlying protocol used for transmitting SIP messages between different entities in a
network. Setting it to ‘TLS’ ensures that the SIP traffic will be encrypted. SIP signalling is responsible for establishing
the call (the control signals to start and end the call with the other party), but it does not contain the audio.
For the audio (voice) path, use the setting ‘SDP SRTP Offer’. Setting this to ‘Optional’ means the SIP call’s RTP audio
data will be encrypted (using SRTP) if the other party also supports audio encryption. If the other party does not
support SRTP, then the call will still proceed, but with unencrypted audio. To make audio encryption mandatory for all
calls, set ‘SDP SRTP Offer’ to ‘Standard’. In this case, if the other party does not support audio encryption, then the
call attempt will be rejected.

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5WIRING CONNECTIONS
The wiring diagram below illustrates one of the most common use cases, where the Line Output of the 8301 is
connected directly to the dry audio input on an amplifier with an input impedance between 600 Ohm and 10 kOhm.
The output level of the 8301 can be adjusted to match the amplifier’s input specification. Check the Basic Settings →
Features section for more details. The optional dry contact closure can be used to activate the amplifier (if required).
Figure 4: Use Case Wiring Diagram
5.1 Connecting Input Devices to 8301
The relay input of the Algo 8301 IP Paging Adapter &
Scheduler can be activated by any normally open or
normally closed switch, or one of several Algo input
buttons/interfaces (e.g. ,1202 Call Button, 1203 Call
Switch, 1204 Volume Control Switch or 1205 Audio
Interface). The input switches can be connected to the
back of the 8301 via the included Terminal Block on
the ‘Relay Input’ pair. To configure the Relay Input
Mode, check the Additional Features →Input/Output
section.
Figure 5: 8301 Relay Input