Table of Contents
Advertisement
A speaker configured as a SIP Multicast Slave will give its highest priority to the 'Priority Call' zone. Other than the
'Priority Call' zone, a page using its SIP extension, has priority over all other multicast zones.
Communication Servers with the capability of dialing many SIP extensions simultaneously for paging may be able to
create zones by calling "page groups" and page telephone speakers in conjunction with overhead speakers.
4.4
SIP-Activated Visual Notification Alerts
In addition to audible notifications, the 8410/8420 can multicast visual alerting with the LED flashers. When a call is
made to the SIP extension, the 8410/8420 will flash the selected light pattern. Often, the flashers for the 8410 will be
part of a hunt group or ring group to flash in conjunction with an audio notification.
There are several configurable strobe options:
•
Flash Pattern
•
Brightness
4.5
Color TLS for SIP Signaling and Provisioning
Algo devices 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 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 an important piece in the Algo device's
operation, to ensure the security, integrity, and privacy of its communication. Algo components that use TLS are
Provisioning and SIP Signaling.
These Algo devices each 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 shared (pre-Sender) secret key.
For further details, reference Algo's guide for
Uploading Public CA Certificates to Algo SIP Endpoints
To install the public CA certificate on the 8410/8420, follow the steps below:
3. Obtain a public certificate from your Certificate Authority.
4. Rename the public certificate 'siptrusted.pem' (only .pem format is supported).
5. In the web interface of the Algo device, navigate to the Advanced Settings → File Manager.
6. Upload the certificate files into the 'certs' directory. Click the Upload button in the top left corner of the file
manager and browse to the certificate.
AL061-UG-GP258410-001-R0
8420 IP Dual-Sided Display Speaker
Securing Algo IP Endpoints: TLS and Mutual
support@algosolutions.com
8410 IP Display Speaker &
Authentication.
Page 16
Advertisement
Table of Contents
