MD-30ETH version 3.2.001
18
Microphone desk
with ethernet connection
MD-30ETH
Backbone network specifications
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Bandwidth:
o
3kbps of control data for each equipment and 1kbps additionally for each alarm.
Example:
Matrix with 5 alarms
3kbps (data) + (5 alarms * 1kbps) = 8kbps
Paging console with 2 alarms
3kbps (data) + (2 alarms * 1kbps) = 5kbps
Total data=13kbps
o
Streaming audio channel according to the audio format protocol (configurable):
RAW PCM 48KHz / 16 bits: 768kbps for each audio channel.
RAW PCM 24 KHz / 16 bits: 384kbps for each audio channel.
RAW PCM 16 KHz / 16 bits: 256kbps for each audio channel.
RAW PCM 8 KHz / 16 bits: 128kbps for each audio channel.
RTP L16 RAW PCM 44KHz / 16 bits: 705.6kbps for each audio channel.
RTP G.711 µ-LAW 8KHz / 8 bits: 64kbps for each audio channel.
RTP G.711 A-LAW 8KHz / 8 bits: 64kbps for each audio channel.
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Note:
Control (without alarms) + number of simultaneous channel * Type of format protocol = Bandwidth
o
RAW PCM 48KHz, 4 channels, 100 equipment
(3kbps * 100Eq.) + (4CH * 768kbps) = 3.4 Mbps
o
RAW PCM 48KHz, 4 channels, 50 equipment.
(3kbps * 50Eq.) + (4CH * 768kbps) = 3.2 Mbps
o
RTP G.711 A-LAW 8KHz, 4 channels, 100 equipment.
(3kbps * 100Eq.) + (4CH * 64kbps) = 0.56 Mbps
o
RTP G.711 A-LAW 8KHz, 4 channels, 50 equipment.
(3kbps * 50Eq.) + (4CH * 64kbps) = 0.4 Mbps
Specifications of the Switch/Router for LAN and WAN networks
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Protocols:
o
TCP/IP For control/signalling/monitoring status.
o
UDP Unicast for Local Audio.
o
UDP Multicast for Global Audio.
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Multicast snooping:
o
Multicast filtering.
o
IGMP v2.
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For large installations:
o
Multicast Routing (Spanning Tree).
o
Capable to handle TOS (Type Of Service).
Summary of Contents for MD-30ETH
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