Vimesa IPA300-Link User manual

IPA300-Link
USER MANUAL - UPDATED FEBRUARY 2022
User Manual
Audio Over IP Link

AUDIO INPUTS Connector type XLR Female
Balanced Input 600/10 kOhm input Impedance
Clipping Level +12dBu
Frequency Response (-3dB) ± 0.1dB (20Hz...20kHz)@44.1 kHz sample rate
Signal to Noise Ratio (SNR) ≤ -70dB
Stereo Crosstalk ≤ -50dB
Total Harmonic Distortion (THD)@-3dBfs ≤ 0.05%
Input Level Software Adjustable from Web Page from -18dB to +9dB step: 1.5dB
AUDIO OUTPUTS Connector type XLR Male
Balanced Output 15 kOhm
Output Level Adjustable from Web Page from -90dBu to +6dBu
Full Scale Output Voltage +9dBu, 8Vpp
Frequency Response (-3dB) ±0.1 dB (20 Hz...20 kHz)@ 48kHz sample rate
Signal to Noise Ratio (SNR) ≤ -70dB
Stereo Crosstalk ≤ -60dB
Total Harmonic Distortion (THD)@-3dBfs ≤ 0.03%
RS-232 INTERFACE Connector DB9 Female
Type & Speed Asynchronous - 300~230.400 Baud
Purpose RS-232 Remote Tunneling
DIGITAL I/O Number of inputs 2-Optoisolated
Number of Outputs 2-Relay Contact
Connector type DB9 Female
ETHERNET Interface 10/100Mbps auto
Connector type RJ45 with Link & Activity LEDs
Protocols TCP/IP, UDP, RTP, DHCP
MISCELLANEOUS Headphone Stereo Jack 3.5mm
Audio-meter Stereo V-meter 10 LEDs
Level Adjustable from volume knob
ELECTRICAL Voltage 90~240Vac ± 20%
Current 250 mA max.
Connector type IEC-C13/C14
Fuse 500mA delayed
MECHANiCAL Material Aluminum
Weight 600gr
Dimensions (LxDxH) 260x160x44 mm (1U)
Rack Mount Kit Available
TECHNICAL SPECIFICATIONS
Technical Specications

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The IPA300 is a solution to stream audio in full-duplex PCM and half-duplex MP3 from a
broadcast studio to a transmitter device in another physical location.
Unidirectional studio-transmitter link (simplex)
1. On the studio device, click “LOCATION” top menu button, select “Studio Encoder” option
and then click on “Apply”.
2.Click on “CONFIGURATION” top menu button, then on “Basic Settings” at the appearing
left menu. Set “Stream Method” to “Push (RTP)”, set the “URL” field to a valid transmiter
IP address/DNS name, set the “Port” field to the port number of the destination device.
Click “Apply” to save the settings.
3. Change now to the transmitter device, click “LOCATION”, select”Transmitter Decoder”
and then click on “Apply”.
Installation
Installation & Use IPA300-Link
Fig. 1: IPA300 rear view
Quick Start Guide IPA300-Link
Fig. 2: Simple studio-transmier link.

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4. Click on “CONFIGURATION” and the on “Basic Settings”. Set “Stream Method” to “Push
(RTP)”, set the URL to “0.0.0.0” and set the “Port” field to match the value set in point 2,
as destination “Port”. Click “Apply” to save the settings.
Bidirectional studio-transmitter link (full-duplex)
*: for this devices refer to the owner user manual.
1. On the studio device, click “LOCATION” top menu button, select “Studio Encoder/
Decoder” and click “Apply”.
2. On the transmitter device, click “LOCATION”, select “Transmitter Encoder/Decoder”,
and click “Apply”.
3. On both “Studio Encoder/Decoder” and “Transmitter Encoder/Decoder” devices, click
on “CONFIGURATION” menu button and then on “Basic Settings” in the left menu. In
the “OUTGOING STREAM” section set the “URL” and “Port” fields, to IP and port of the
destination (remote) device. In the “INCOMING STREAM” section set the “Port” field as the
local receiving port, that must match the same value of the remote “OUTGOING STREAM”
section “Port” field. The “Stream Method” must be “Push (RTP)” in all four sections. Click
“Apply” to save the settings.
NOTE: for bidirectional (full-duplex) communications, audio format must be set to exactly
the same on both (studio and transmitter) devices.
Unidirectional studio-transmitter link over firewall
This scheme is representing an unidirectional link, where the encoder would stream to
the decoder device that is located behind a firewall. BRTP protocol allows the decoder
Fig. 3: Bidireconal studio-transmier link (full-duplex).

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device to announce itself to the studio device, to retrieve (pull) the stream. This scheme
requires that at least the encoder device is reachable from the internet.
1. On the studio side, click “LOCATION” top menu button, select “Studio Encoder” and
click “Apply”.
2. On the transmitter side, click “LOCATION”, select “Transmitter Decoder” and click
“Apply”.
3. On the “Studio Encoder” device, click on “CONFIGURATION” top menu button and then
on “Basic Settings” in the left menu. Set “Stream Method” to “Pull (BRTP), set the “URL”
field to “0.0.0.0” and set the “Port” field to the BRTP listening port and click “Apply”.
4. On the “Transmitter Decoder” device, click on “CONFIGURATION” top menu button and
then on “Basic Settings” in the left menu. Set “Stream Method” as “Pull (BRTP), set the
“URL” field as a valid studio URL/IP, set the “Port” field as the listening port, to match the
“Port” value set for the studio device. Click “Apply” to save the settings.

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Conguration and access IPA300-Link
Use an Internet browser to connect to the devices just typing the device IP address in the
browser’s URL line. This IP is shown on the label applied on the device.
Default: 192.168.178.104
Home
The Home page give informations about the status of the stream.
Site Type displays the current configured site type.
Stream Mode displays the current configured event to start streaming to the remote
destination(s).
Keep-Alive displays the current configured keep-alive strategy.
Connection Status displays the actual connection state.
Incoming Stream Status displays the actual Incoming stream status (ON/OFF).
Outgoing Stream Status displays the actual outgoing stream status (ON/OFF):
Fig. 5: IPA300 Homepage

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Audio Input is the selected Input source;
Audio Format is the Incoming audio format, or the local audio format if no valid Incoming
RTP payload is detected;
Input/Output Audio level displays the Input (only at Line Interface) and output audio
levels in dB and as visual peak level graphic bar;
Relay 1 to 2 shows the configured event for local relay switch;
Remote Inputs remote inputs state, lime color means active, gray means inactive;
Local Inputs local inputs state, lime color means active, gray means inactive;
Local Relays local relay state, lime color means active, gray means inactive.
Site Type on this drop-down menu select one of the four device working modes for
the device. After reboot (Apply), the “Configuration” section of the WEB UI will show the
device-specific configuration fields only.
NOTE: Selecting an encoder/decoder (full duplex) site type, the audio formats of both
peers must be the same. For the full-duplex link, MPEG audio formats are not supported.
In case of existing MPEG audio settings, the device will reboot and use the μ-law 8kHz
mono audio format as default.
In the Configuration menu it is possible to configure the IPA300 parameters. The menu
is composed by Basic Settings, Network, Streaming, Audio, I/O and Control, Serial and
Security Settings.
Location
Fig. 6: Locaon Page
Conguration

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Basic Settings
This section helps to set a fast-startup configuration. It allows the quick configuration of
the first “Outgoing Stream” destination and of the “Incoming Stream” socket.
Outgoing Stream - configures the stream destination URL and Port. .
Default: 192.168.178.106
Incoming Stream - allows to set the local listening IP and Port number.
See “Streaming” manual/help section for further information.
Network
Fig. 7: Basic Sengs Page
Fig. 8: Network Page

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This section allows the configuration of the following device settings:
IP Address: Enter the 4 values of the desidered device IP address e.g. “0.0.0.0”
for automatic discovery (in order BOOTP/DHCP/IPzator/AutoIP), “192.168.0.12” for
an internal LAN.
The automatic discovery functions are not executed if a static IP address is set.
To enable automatic discovery but disable certain IP discovery functions set
segment 1,2 and 4 of the IP address to zero. The 3rd segment of the IP is a binary
bitmask, his value can be used to disable one or more discovery function.
For each function you want to disable add the value from the table below:
- “0,0,1,0” to disable AutoIP
- “0.0.2.0” to disable DHCP
- “0.0.4.0” to disable BOOTP
- “0.0.8.0” to disable IPzator
Netmask: set the network subnet mask.
Gateway IP Address: set the IP address of network’s default gateway.
DNS: set the IP address of the name resolution (DNS) server(s).
Syslog Address, Syslog message destination server: if “0.0.0.0” (default) Syslog
messages are broadcasted.
DHCP Host Name: set this field to give a descriptive hostname to identify the
device on the DHCP server.
Web Server Port: set the WEB UI service listening port.
QoS/DSCP: set the Quality of Service/Differenclated Service Code Point (DSCP)
value. If this field is set, QoS in IP header will set to this value while forwarding
packets to destination hosts or routers. This supersedes the IP4 Type of Service
(ToS) value and uses the same byte. Valid values are 0-63, default is 0 (unset).

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Streaming
Outgoing Stream - this section is visible for the following site types:
Studio Encoder
Studio Encoder/Decoder
Transmitter Encoder/Decoder
Stream destinations - up to 8 audio destinations can be configured, each one with the
following fields: “Stream Method”, “URL” and “Port”.
Configurable stream methods are:
Push (RTP), to stream to the destination using RTP over UDP.
Multicast, to stream to a multicast group as destination.
Pull (BRTP), to wait for a BRTP request from the remote peer, it will learn the IP and
port from the requesting peer and answer with the audio stream to learned IP destination.
Example:
Fig. 9: Streaming Page