Specifications

Document 90-00067 A Algo Communication Products Ltd [phone]
2014-09-12 4500 Beedie St Burnaby BC Canada V5J 5L2 [e-mail]
Page 21 www.algosolutions.com
Automatic Gain Control (AGC)
If enabled, SIP and multicast audio received by the speaker will be
normalized prior to gain being applied. Various SIP telephones,
clients, and devices have different level outputs and some talkers are
louder than others. AGC can dramatically improve the consistency of
output level and also ensure the speaker can reach full output.
Audio Delay
When paging to the 8188 Ceiling Speaker as well as other third party
devices, the low latency of the 8188 Ceiling Speaker may lead other
devices. By adding audio delay up to one second, the 8188 Ceiling
Speaker may be synchronized with other speakers or telephones that
have greater latency.
Multicast IP Addresses
Each 8188 Ceiling Speaker has its own IP address, and shares a
common multicast IP and port number (multicast zone) for multicast
packets. The master speaker transmits to a configurable multicast
zone, and the slave units listen to all the multicast zones assigned to
them.
The network switches and router see the packet and deliver it to all
the members of the group. The multicast IP and port number must
be the same on all the master and slave units of one group. The user
may define multiple zones by picking different multicast IP addresses
and/or port numbers.
1. Multicast IP addresses range: 224.0.0.0/4
(from 224.0.0.0 to 239.255.255.255)
2. Port numbers range: 1 to 65535
3. By default, the 8188 Ceiling Speaker is set to
use the multicast IP address 224.0.2.60 and
the port numbers 50000-50008
Make sure that the multicast IP address and port number do not
conflict with other services and devices on the same network