Calrec ARGO, Installation & Technical Manual

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AoIP Router Module
This module can provide up to eight
1Gbps ethernet connections (four
redundant pairs) or two 10Gbps ethernet
connections (one redundant pair) via SFP
modules for networked audio transport
with other AoIP endpoints. The router
buffers and synchronises the audio data
between these ethernet interfaces and
the backplane interface for transport to
the DSP or another router module.
The router module also controls two fans
the first is mounted on the front of the
module and the other is mounted in the
base of the module. Two LED indicators
appear on the front of the module ,
one to show the ‘Module OK’ status. If
the module LED lights solid green this
indicates that the module is OK, but if
it lights solid red this indicates that the
Module is not OK. The other LED shows
the ‘Fan’ status, if the Fan LED lights solid
green this indicates that the Fans are
OK, but if it lights red this indicates a Fan
failure.
Impulse AoIP capacity - 1Gbps mode:
• Each router card is capable of
2048x2048 audio channels.
• Each router card provides 4 pairs of
2022-7 packet merging media NICs.
• Each NIC can send and receive up to
64 streams in each direction.
• Each stream can be configured to have
up to 80 channels (depending on MTU,
based on packet time, codec and audio
sample rate).
• In 1G mode, the limitation is on the
bandwidth of the 4 x 1G NICs.
• General good practise with AoIP says
media streams should not exceed
around 60% of the link bandwidth.
• This generally equates to 256
channels per 1G, assuming a
baseline config of 32 x 8 channel
streams @ 125us packet time/L24
codec/48k audio sample rate.
• Using higher channel count streams
you can get more channels, e.g.
6 x 80 channel s 1 x 32
channel streams = 512 channels in
625Mbps per NIC
• The rough 60% bandwidth utilisation
figure can be pushed higher if
you have a well-managed and
deterministic network.
FIG 3 - RY6427 IMPULSE ROUTER MODULE - FRONT VIEW
Router LED Status Indicators
<-1 SFP port A1 (left) activity
<-2 SFP port A2 (right) activity
<-3 SFP port A3 (left) activity
<-4 SFP port A4 (right) activity
<-5 Module OK
<-6 Fan Ok
<-7 SFP port B1 (left) activity
<-8 SFP port B2 (right) activity
<-9 SFP port B3 (left) activity
<-10 SFP port B4 (right) activity
Impulse AoIP capacity -10Gbps mode:
(Available in a later version)
• Each router card is capable of
4096x4096 audio channels.
• Only one media NIC pair per router card
is active.
• Each 10G NIC support up to 512
streams in each direction.
• Again each stream can be up to 80
channels.
• In this mode of operation you can fully
utilise the router with IP streams, e.g.
512 streams of 8 channels = 4096 =
7,270Mbps.