SystemBase C530ip-s User manual

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IP CODECS
USER MANUAL
C530ip-s
REL309 upwards

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Table f C ntents
INTRODUCTION.............................3
Key Features.................................3
INSTALLATION..............................4
CONTROLS AND INDICATORS....4
VFD Display..................................4
VU Meters.....................................4
Menu Buttons................................4
DIAL Button...................................4
HANG Button................................4
Numerical - 9 Buttons................4
FRONT & REAR PANELS.............5
MENU MAP.....................................6
IP MENU MAP................................7
MENU SYSTEM..............................8
Unit Description / Title...................8
IP Link Status................................8
Audio Status..................................8
IP Options.....................................8
IP Re mote Optio n s ..................8
IP Link 1..6 Op tio n s .........8
IP Link 1 Address..............8
IP Link 1 Algorithm...........9
IP Link 1 Format................9
IP Link 1 Sample Rate.......9
IP Link 1 Mode..................9
IP Link 1 F C....................9
IP Link 1 AutoCon.............9
IP Loc al Optio n s ......................9
IP Local Na m e.....................9
IP Local Addres s .............1 0
IP Local Ma s k ...................1 0
IP Local Gateway............1 0
IP Port.................................10
IP Auto B uffer..................1 0
IP B uffer Lengt h ..............1 0
IP Gro u p ID......................1 0
IP DHCP.............................1 0
IP thernet Mode.............11
IP Packet Size..................11
SIP Remote Port..............11
SIP Local Port..................11
SIP Audio Port.................11
SIP Public IP....................11
X21 Audio....................................11
Backup Options...........................11
Back u p Mo nitor....................1 1
Back u p Thre s hold................1 2
Res to re Tim e..........................1 2
Audio Source...............................12
Codec Function...........................12
IP Mode....................................1 2
X21 Mode................................1 2
Bac k u p Ma ster X21->IP /
Slave X21->IP........................1 2
Auxiliary Data Port......................12
Alarm...........................................12
Headroom...................................13
System Options...........................13
P a s swo rd .................................1 3
Loop b ac k .................................1 3
SNMP........................................1 3
t h er n et Optio n s ..................1 3
t h e r n e t DHCP................1 3
IP Ad dr e s s.........................1 3
t h e r n e t Ma sk .................1 3
t h e r n e t Gatew ay...........1 3
Set Defa ults............................1 3
Screen Saver..........................1 4
Email Alert Messages.................14
m ail Timi ng.........................1 4
SIP.................................................15
Local Con n e ctio n s................1 5
SIP Server...............................1 5
SIP Tr u n k Provider..............1 5
SIP Registr a tio n ....................1 5
EASYMON NETWORK MONITOR
..............................................................16
WEB SERVER..............................17
REMOTE MANAGEMENT...........18
PHYSICAL CONNECTIONS........19
Analogue Audio...........................19
Digital Audio................................19
LAN Port......................................19
IP Port (ISDN 3-4).......................19
X.21 Port.....................................19
Manager Input Port.....................2
Manager Output Port..................2
Auxiliary Data Port......................2
Alar m Sig n al..........................2 0
PHYSICAL PROPERTIES............21
Dimensions.................................21
Power Requirements..................21
Environmental Conditions...........21
WARRANTY INFORMATION.......21
CE COMPLIANCE........................21
EXPORT REGULATIONS (EAR). 21

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INTRODUCTION
The C53 ip Audio Codec has been designed for the broadcast of high quality audio over digital networks,
such as IP, dedicated digital lines, optical fibre networks, digital microwave links and satellite links. To achieve
an efficient utilisation of the available network data bandwidth, the C53 ip uses apt-X1 4:1 fixed audio
compression system to provide full duplex, point-to-point audio transmission.
Key Features
•32 Bit Floating Point DSP – Analog Device SHARC Processor
•Internet Web-Server for Remote Management and Diagnostics
•Audio Over IP Connectivity – 83Kbps to 26 Kbps
•APTX1 , G722, Linear.
•IP – Forward Error Control (FEC)
•X.21 Connectivity 64Kbps to 384Kbps
•Automatic IP Backup of X.21
•APT-X Encoding & Decoding - 3.7kHz to 22.7kHz Stereo Audio (64 - 384Kbps)
•Analogue and Digital AES3 Audio Interface via XLR Connectors
•Simultaneous Input & Output VU Meter Display
•Automatic Email Alerts – Alarm/Diagnostics Information
•Compact Design - 1U 19” Rackmount Unit
•Backward Compatible with C31 xr, C4 xr & C45 xr Codecs
•Selectable Analogue Audio Headroom
•SNMP Management (Simple Network Management Protocol)
•Dual, End-to-End, Duplex, Contact closures
•EasyMON Network Monitor Tool
•Unicast, Simulcast, Multicast (IGMPV2)

INSTALLATION
All Systembase C5 ip series codecs are designed
to fit a standard 19” rack. Each unit measures
44.45mm high (1U). Notes for installing:-
1/ Do not obstruct any air vents that the product may
have.
2/ Do not mount the unit directly above or below
other equipment within the rack. It is recommended
to leave a space of 1U between units.
3/ Where possible connect the M4 earth bonding
point to the rack enclosure frame.
CONTROLS AND INDICATORS
VFD Display
A 24 character by 2 line VFD (Vacuum Fluorescent
Display), provides comprehensive information on
the configuration of the unit and current status.
VU Meters
2 bit True RMS Digital VU Meters for monitoring
Left and Right audio channels with Peak Hold. The
VU Meter range is -6 dB to dB with red LEDS to
indicate clip.
Menu Butt ns
 Menu Scroll Up / Previous button.
 Menu Scroll Down / Next button.
 Menu Select / Edit button is used to select
the configuration which is to be modified.
 Menu Backspace button.
NO NO / Cancel button is used to abort the
configuration change. The NO button is also
used to exit a menu level and return to the
level above. Pressing the NO button several
times will always take the user back to the
title display.
YES YES Confirm button is used to confirm
actions or configuration changes.
DIAL Butt n
A depression of the DIAL button will take you to the
first of six IP connection menus.
MENU : Connect IP1 y/n?
IP>198.0.0.17
To make this connection press the YES key.
Alternatively, if either the  or  down arrow is
pressed you will be taken to the adjacent IP
channel.
HANG Butt n
A depression of the HANG button is used to
disconnect IP calls.
MENU :Disconnect IP1 y/n?
NAME>198.0.0.17
To proceed with the disconnection press the YES
key. Alternatively, if either the  or  down arrow
is pressed you will be taken to the adjacent IP
channel.
Numerical 0 - 9 Butt ns
The - 9 Numerical Keypad allows entry of IP
addresses and names.
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FRONT & REAR PANELS

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MENU MAP
UP
DOWN
RIGHT / EDIT
BACKSPACE
YES CONFIRM EDIT
NO CANCEL EDIT / LEFT

IP MENU MAP
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UP
DOWN
RIGHT / EDIT
BACKSPACE
YES CONFIRM EDIT
NO CANCEL EDIT / LEFT

MENU SYSTEM
The menu system on the C53 ip Audio Codec has
been designed to allow the user to configure the unit
with ease. Six keys are used to drive the menu
system :-
UP
DOWN
RIGHT / EDIT
BACKSPACE
YES CONFIRM EDIT
NO CANCEL EDIT / LEFT
Unit Descripti n / Title
The software release and serial number of the unit
are displayed on the Title screen.
SYSTEM ASE C530ip
REL 001 S/N 0108-001
IP Link Status
MENU: IP Link Status >
IP1: Stream IP2: Idle
The  button is used to display the status
information of the IP Links :-
INFO:IP I STREAM>DUPLEX
NAME:0109-007
The  or  down buttons may be used to cycle
through the available IP links.
Audi Status
The status of the received audio, the audio format
and the data rate of the codec.
INFO: Audio Status SYNC>
APTX:7K5 Mono 64Kbps
The codec has been designed to Mute the audio
signal if end-to-end synchronisation is not achieved.
The data rate displayed is the actual data rate which
the codec has achieved end-to-end synchronisation
and not necessarily the configured mode.
The  button may be used to display information
about the AES input data stream.
INFO: Aes Status
RX=Con FMT=Pro VLD=PCM
RX is the status of the AES audio receive signal.
Con = Connected, Dis = Disconnected
FMT is the AES format.
Pro = Professional, Con = Consumer
VLD is the AES Valid Bit
PCM = PCM, Dat = Data
IP Opti ns
MENU: IP Options
The next level of the menu system allows the user
to modify the parameters associated with IP
operation of the unit by pressing the  button.
IP Rem te Opti ns
MENU: IP Remote Options
The next level of the menu system allows the user
to modify the parameters associated with IP Remote
Links.
IP Link 1..6 Opti ns
MENU: IP LINK 1 OPTIONS
The IP parameters associated with each IP Link can
be changed.
The following 7 option menus are repeated for all IP
Links.
IP Link 1 Address
MENU: IP Link 1 Address
198.0.0.8
The IP Remote Address can be entered using the
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numerical keypad. The button backspaces to edit
a number once it has been confirmed. On
completion press the YES button to save the
changes, and the NO button to abort the changes.
If a Mutlicast address is specified and AutoCon
initiated, then the codec will automatically initiate
IGMP2 to join the multicast group as either a sender
or receiver (as specified in the mode menu).
IP Link 1 Alg rithm
MENU: IP Link 1 Algorithm
APTX
The  and  buttons can be used to select the
required IP Audio Algorithm :-
APTX
PCM
G722
Note: All transmit audio modes are required to be
the same format. If the user attempts to connect in a
format that does not match the current operational
mode then the codec will automatically override the
user setting.
IP Link 1 F rmat
MENU: IP LINK 1 FORMAT
Stereo
The Audio Format of the audio can be selected.
Mono
Stereo
IP Link 1 Sample Rate
MENU:IP LINK 1 SAMPLERATE
48KHz
The Sample Rate of the IP Audio can be selected.
48K
32K
16K
8K
IP Link 1 M de
MENU: IP LINK 1 MODE
Duplex
The IP Audio Mode can be selected.
Duplex
Transmit
Receive
No Audio
Note: If Multicast is selected then only Transmit or
Receive options are valid.
IP Link 1 FEC
MENU: IP LINK 1 FEC
OFF
The Forward Error Control FEC mode can be
selected as follows :-
OFF - No FEC used.
4 - Ratio of lost packets which can be 1 %
recovered is 1 in 4.
8 - Ratio of lost packets which can be 1 %
recovered is 1 in 8.
IP Link 1 Aut C n
MENU: IP LINK 1 AUTOCON
ON
The C5 ip can be configured to Auto-Connect if
the IP connection is disrupted for any reason
including power reset.
IP L cal Opti ns
MENU: IP LOCAL OPTIONS
The next level of the menu system allows the user
to modify the Local IP parameters.
IP L cal Name
MENU: IP LOCAL NAME
LONDON CODEC 2 / 0109-006
An IP Local Name can be changed by the user and
is used to identify a specific C5 ip Codec. The
factory default name is the serial number of the unit.
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IP L cal Address
MENU: IP LOCAL Address
198.0.0.2 (dhcp)
The IP Local Address can be entered using the
numerical keypad. The button backspaces to edit
a number once it has been confirmed. On
completion press the YES button to save the
changes, and the NO button to abort the changes.
If DHCP is configured to ON then the text “(dhcp)” is
displayed as shown above.
IP L cal Mask
MENU: IP LOCAL MASK
255.255.255.0 (dhcp)
The Subnet Mask associated with the IP address of
the codec can be configured.
If DHCP is configured to ON then the text “(dhcp)” is
displayed as shown above.
IP L cal Gateway
MENU: IP LOCAL GATEWAY
198.0.0.22 (dhcp)
The IP Local Gateway Address associated with the
IP address of the codec can be configured.
If DHCP is configured to ON then the text “(dhcp)” is
displayed as shown above.
IP P rt
MENU: IP PORT
5000
The IP Port Address can be configured using the
numerical keypad.
In this example port 5 would be used for
streaming RTP audio, while 5 1 would be used for
setting up the IP call session.
IP Aut Buffer
MENU: IP AUTO UF
AUTO
Auto
Manual
The C5 ip default setting is with Auto Buffering
enabled. The characteristics and performance of the
IP line is evaluated over a short period of time and
the IP Buffer Length is optimised accordingly.
IP Buffer Length
MENU: IP UF LENGTH
20 PACKETS
Auto Buffering can be disabled if there are problems
due to spurious errors. The IP Buffer Length can
then be manually adjusted (1-n Packets), as
required.
IP Gr up ID
MENU: IP GROUP ID
1234
The IP Group ID is used to prevent the C5 ip
Codec from accepting IP connection requests from
unknown sources. This is a useful facility to protect
against accidental or malicious IP connections by
rejecting all requests which do not have a matching
Group ID.
IP DHCP
MENU: IP DHCP
ON
On
Off
When Dynamic Host Configuration Protocol (DHCP)
is selected to ON the C5 ip will request a
temporary IP Address from the IP Server and
thereby simplifying the setup process.
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IP Ethernet M de
MENU: Ethernet Mode
Auto
Auto
1 Base-T Half Duplex
1 Base-T Full Duplex
1 Base-TX Half Duplex
1 Base-TX Full Duplex
This menu is used to force the IP module to a
specific IP configuration. This is useful when
interfaceing to Fibre modems that do not support HP
MDIX.
IP Packet Size
MENU: Packet Size
Defualt
Defualt
1-19 mS
This is used to define how many Ms of audio is
captured in each transmitted packet. If left on default
then the codec will choose the standard packet size
for that audio mode. However, if required you can
adjust the packet size to lower the delay on your
AoIP link.
The receive side of the AoIP link will always adapt to
the size of the packets being received.
SIP Rem te P rt
MENU: SIP Remote Port
5060
The remote port for the SIP algorithum can be
changed here.
SIP L cal P rt
MENU: SIP Local Port
5060
The local port for the SIP algorithum can be
changed here.
SIP Audi P rt
MENU: SIP Audio Port
5050
The audio port for steaming can be changed here.
SIP Public IP
MENU: SIP Public IP
29.10.0.2
If the codec is sitting behond a NAT router it can be
usfull to configure this entry with the public Ip
address that would be seen by the outside world
when trying to make a connection.
X21 Audi
MENU: X21 Audio
APTX: 15K2 Stereo 256Kbps
The  and  buttons can be used to select the
required X21 Audio format:
APTX: 22K5 Stereo 384Kbps
APTX: 15K2 Stereo 256Kbps
APTX: 22K5 Mono 192Kbps
APTX: 12K2 Stereo 192Kbps
APTX: 15K2 Mono 128Kbps
APTX: 7K5 Stereo 128Kbps
APTX: 7K5 Mono 64Kbps
APTX: 3K7 Stereo 64Kbps
NOTE: When operating in Mono, only the Left Input and Left
Output audio channels will be active if the Audio Mixing
option has been switched OFF.
Backup Opti ns
The user can modify the configurations associated
with the automatic ISDN Backup and Restore
operation.
Backup M nit r
INFO: ackup Monitor
0% X21 Sync Errors
This menu displays the percentage of Sync Loss
Errors in the last 1 seconds.
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Backup Thresh ld
MENU: ackup Threshold
50% of X21 SYNC Errors
The Backup Threshold is the level at which the
automatic ISDN Backup is initiated. The Backup
Threshold can be changed to a value between %
and 1 %.
Rest re Time
MENU: Restore Time
10 Seconds
The Restore Time is the time of error free data
throughput required to initiate the automatic X21
Restore. The Restore Time can be changed to a
value between and 6 seconds.
Audi S urce
MENU: Audio Source
A
n
a
l
o
g
The Audio Source can be set to Analog or AES3.
The AES3 output provides digital audio at a sample
rate of 48KHz with 24 bit audio resolution.
C dec Functi n
MENU: Codec Function
IP Mode
The C53 ip Codec can operate in 1 of 4 selectable
modes :-
IP Mode
X21 Mode
Master X21->IP
Slave X21->IP
IP M de
The IP port is the primary network interface and the
ISDN & X.21 ports are the secondary network
interfaces.
X21 M de
The codec will only route audio to the X.21 port, and
will effectively ignore the ISDN ports. The ISDN
ports will still be capable of making and receiving
ISDN calls, however the audio will not be routed
through to the ISDN connections.
Backup Master X21->IP/ Slave X21->IP
The X.21 port is the primary network interface and
the IP connection 1 is used for backup. The codec at
one end of the X.21 line should be configured as a
Backup Master X21->IP and the other codec should
be configured as a Backup Slave X21->IP. This
prevents both codecs initiating the IP Backup, which
can cause conflict. The automatic IP Backup is
initiated by the Master Codec following 5 % of
synchronisation errors on the X.21 line. The X.21
Restore occurs following 1 seconds of continuous
error free, test data transmissions on the X.21 line.
The Backup Threshold and Restore Time settings
can be modified from these factory defaults using
the Backup Options menu.
NOTE: When operating in Backup Master X21->IP/Slave
X21->IP mode, it is advised that the DCE should carry X.21
termination resistors.
Auxiliary Data P rt
MENU: AuxData
Off
The Auxiliary Data Port can be configured for the
following modes:
Off,
96 bps,
48 bps,
24 bps,
96 bps(alt),
48 bps(alt),
24 bps(alt),
Relay Mode.
NOTE1: CTS output signal should be used for Flow Control
when Auxiliary Data is enabled.
NOTE2: All modes appended by “(alt)” are compatible with
codec’s manufactured by APT.
NOTE3: Relay mode enables two sets or bi-directional
contact closures. The connection details are shown in the
“Manager Input Port” and “Manager Output Port” sections of
this manual.
NOTE4: At present Aux data is not passed over IP
connections.
Alarm
MENU: Alarm
Sync Loss
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The Alarm output can be configured to the following
options:
Off
Sync Loss
Backup
Headr m
MENU: Headroom
+12d u
Headroom can be configured to either level.
System Opti ns
The user can modify the global System
configurations of the Codec.
Passw rd
MENU: Password
Not Set
The C53 ip has two levels of password protection to
avoid accidental re-configuration; Edit Lock and Full
Lock.
L pback
MENU: Loopback
Off
The C53 ip can be configured to provide an internal
digital loopback of the compressed audio signal
prior to the X.21 / ISDN interface. The loopback
function will automatically use the highest data rate
available.
NOTE : The loopback function is not available when
operating in Backup Master or Backup Slave modes.
SNMP
MENU: SNMP
Off
The C53 ip can be configured to support SNMP
Management. Please contact Systembase Limited
to request the MIB file.
Ethernet Opti ns
MENU: Ethernet Options
100 ASE-TX full-duplex
The C53 ip can be remotely managed via the
Ethernet Port. The display will show:-
Inactive,
Negotiation,
1 BASE-TX full-duplex,
1 BASE-TX half-duplex
1 BASE-TX full-duplex
1 BASE-TX half-duplex
Ethernet DHCP
MENU: Ethernet DHCP
ON / OFF
When Dynamic Host Configuration Protocol (DHCP)
is selected to ON the C53 ip will request a
temporary IP Address from the IP Server and
thereby simplifying the setup process.
IP Address
MENU: Ethernet IP
192.168.001.002
The current Ethernet IP Address of the codec can
be configured.
Ethernet Mask
MENU: Ethernet MASK
255.255.255.000
The Subnet Mask associated with the Ethernet IP
address of the codec can be configured.
Ethernet Gateway
MENU: Ethernet GATEWAY
192.168.001.001
The Gateway associated with the Ethernet IP
address of the codec can be configured.
Set Defaults
MENU: Set Defaults
The codec can be re-configured back to the Factory
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Defaults.
MENU: Set Defaults
Confirm Yes/No ?
Press the YES button to confirm, and the NO button
to abort.
NOTE: All changes made to the patch configurations will be
lost and there is no Undo option.
Screen Saver
MENU: Screensaver
On
The VFD screensaver can be disabled if required.
Email Alert Messages
The codec can be configured via the Ethernet
Webserver to send an Email Alert messages
following a change in Sync/IP state.
In the SMTP menu enter the address of your
outgoing SMTP mail server, example.mail.com.
Alternatively you may enter the IP address if known.
If you leave this field blank then the email alerts
function will be disabled.
If the mail server requires a user name and
password then fill in the User name and Password
fields otherwise leave them blank.
Now enter the recipient email address and subject
line to complete the configuration. If you leave these
fields empty no alerts or logs will be sent.
Email Timing
Once the Email Alert has been configured correctly,
the codec will send an email Event Log 1 seconds
after a Sync Loss has occurred. The Event Log will
then be cleared and disabled for 15 minutes before
being re-enabled again.
If the codec is unable to send the email successfully,
then the Event Log will be cleared and returned to
the enabled state.
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SIP
SIP stands for Session Initiation Protocol and is
used by devices that wish to establish Multimedia
Sessions. Equipment manufacturers that support
SIP will have the ability to connect with each other in
audio modes that are supported in common.
SIP can be used in several ways:
L cal C nnecti ns
The most basic application of SIP would be two
codecs residing on the same intranet. Once both
codecs have been installed, one codec can call the
other directly using an address in form
“sip:user@192.168.1.3 ”.
SIP Server
In this scenario each codec would have a allocated
SIP account on the SIP server. Each account would
have a user name, password and Server address.
Once the codecs have been configured and
registered on the SIP server it is possible to place a
call from one to the other using the other codecs
“user” name. For example if the two codec names
were “codecA” and “codecB” then codec A would
simply use the following address to make a call to
codec B:-
sip:codecB
The important point to make here is that both
codecs are no longer location or Ip address
dependent, as it is the combination of the SIP
registration process and the “user” name that makes
the connection.
Audio would still stream directly from CodecA to
CodecB as the SIP server only handles the call
signalling.
SIP Trunk Pr vider
The third way SIP can be used is by obtaining an
account with a SIP based telephony provider. Again
you will be provided with a user name, password
and server address. Once registered you will be
able to make and receive standard voice calls to
regular analogue or digital phones. In addition, you
can make SIP calls to “Hdvoice” enabled telephones
which operate in G722.
This Function emulates a TBU.
To make a phone call in this configuration you would
use the following address string:-
sip: 1747861123
SIP Registrati n
SIP registration is supported on the C51 ip-s audio
codec. However, it can only be accessed via the
WEB GUI. To make a successful registrar you will
have to obtain a username, password and domain/ip
address from the administrator of the SIP server.
Once enabled the registration progress is displayed
and will display “success” once completed. SIP
registration has to be refreshed periodically and the
timeout variable can be edited to change the
number of seconds between each refresh.
It is important to note that the “User Name” defined
here will be the name used by calling parties
wishing to establish a connection with your unit. This
user name will be your first line of protection against
rouge callers. Your SIP ID would be:-
“sip:User Name@Server Address”
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Page 16
EASYMON NETWORK MONITOR
EasyMON is a free network monitor tool that allows an organisation to monitor multiple codecs in a single
browser window with minimal overhead.
EasyMON is free, and maybe downloaded from the Systembase website, www.systembase.com. Included in
the download are instructions that will guide you through the correct configuration.
Note: For EasyMON to function you will require firmware REL2 3 or later.

Page 17
WEB SERVER
Firstly configure the appropriate settings for your network in the Ethernet options menu. Once configured
correctly connect the port labelled “LAN” to your router.
On your computer web browser type in the IP address of the codec (http://192.168.1.2).
A Windows Login screen will be displayed. The default Username is “admin” and the default password is
“admin”. If you wish to disable the password prompt then simply leave the password field blank.
The screen shots below shows the layout of the Webserver for the C53 ip Codec.

REMOTE MANAGEMENT
The C53 ip Codec can be configured remotely by
connecting a straight 9 Way D-Type cable to the
MGR IP port, and using the Standard Windows
Terminal Program. To configure more than one unit
at the same time, the user can connect another
straight 9 Way D-Type cable from the MGR OP port
of the first unit, to the MGR IP port of the next unit,
in a “Daisy Chain” manner. There are no limitations
on the number of codecs which can be linked
together for remote configuration purposes.
On initial connection, the Standard Windows
Terminal Program screen will be blank. The user
should then press the Enter key to clear the
command buffer.
Type “poll” followed by the serial number :-
poll 1 8- 1 < carriage return / enter >
1 8- 1>
A prompt of the actual serial number will appear on
the screen. The unit is now ready to receive
commands.
Type “help” for a complete list of commands and
options.
1 8- 1 >help
C53 ip Network Commands, (c) Systembase
Limited
poll (8 digit serial number of unit to be selected)
status (displays the codecs current status,
/s option for short)
set x21 (APTX:3K7 Stereo 64Kbps,
APTX:7K5 Mono 64Kbps,
APTX:7K5 Stereo 128Kbps,
APTX:15K2 Mono 128Kbps,
APTX:12K2 Stereo 192Kbps,
APTX:22K5 Mono 192Kbps,
APTX:15K2 Stereo 256Kbps,
APTX:22K5 Stereo 384Kbps)
set aux (Off,
96 bps,
48 bps,
24 bps,
96 bps(alt),
48 bps(alt),
24 bps(alt),
Relay Mode)
set source (Analog, AES3)
set loopback (Off, On)
The Status command will display the following
information on the codec.
1 8- 1>status
SYSTEMBASE C53 ip(c)
APTX Status= SYNC
Loopback= Off
Aux Data= Off
X21 Audio= APTX:22K5 Stereo 384Kbps
Audio Source= Analog
NOTE: The Serial Manager port is intended to provide backwards
compatibility in the field with older C31 xr-x audio codecs.
Therefore it only caters for commands and functions that are
common to both products.
Page 18

PHYSICAL CONNECTIONS
Anal gue Audi
The audio interface presents balanced stereo XLR
inputs and outputs. The electrical characteristics of
these connections is detailed below :-
I/P Impedance >1 K Ohms
I/P Level +12dBu / +18dBu Max.
I/P C nnect rs Balanced XLR Female
O/P Impedance <1 Ohms
O/P Level +12dBu / +18dBu Max.
O/P C nnect rs Balanced XLR Male
C mpressi n Rati apt-x1 4:1 Fixed
C ding Alg rithms apt-X1 Sub-band ADPCM,
G722 (Stat Mode)
S/N Rati >1 2dBm
F rmat Mono / Stereo
Bandwidth 3Hz to 22.5KHz
Sampling Rate 48KHz
Digital Audi
The digital audio interface provides both transmit
and receive AES3 connectivity via XLR input and
output connectors. Sample rate conversion is
standard on both input and output digital audio
signal paths. This facility allows the user to connect
AES3 signal sources that are asynchronous to the
codecs network interface.
The electrical characteristics of these connections is
detailed below :-
I/P C nnect r Balanced XLR Female
O/P C nnect r Balanced XLR Male
C mpressi n Rati Linear
C ding Alg rithms L24, L16
Sampling Rate 48KHz
LAN P rt
1 x RJ45 Connector supporting:
1 BASE-TX full-duplex
1 BASE-TX half-duplex
1 BASE-TX full-duplex
1 BASE-TX half-duplex
IP P rt (ISDN 3-4)
IP Interface
1 B-TX full-duplex
1 B-TX half-duplex
1 B-TX full-duplex
1 B-TX half-duplex
Unicast / Simulcast
IP Audi Alg rithm LINEAR PCM, APTX, G.722
IP Audi FS 8KHz to 48KHz
IP C nnect r RJ45
X.21 P rt
The electrical characteristics and the pin out of the
connector is detailed below:-
X.21 Type Fixed DTE
X.21 Speed 64Kbps to 384Kbps
X.21 Signals C, I, TXD, RXD, CLK
X.21 C nnect r 15-way Dsub Female
PIN SIGNAL
1Protect GND
2T(a)
3C(a)
4R(a)
5I(a)
6S(a)
7N/C
8Signal GND
9T(b)
10 C(b)
11 R(b)
12 I(b)
13 S(b)
INSTALLATION NOTE: The user is advised to ensure the
DCE connector of the X.21 cable is terminated correctly.
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Manager Input P rt
Type V.24/RS232 - Fixed DCE
Speed 96 bps (8,n,1)
Signals TXD, RXD, SIG GND
C nnect r 9-way Dsub Female
PIN SIGNAL
2RXD (o/p)
3TXD (i/p)
5SIG GND
6Relay 1 COM
7Relay 1 N/O
8GND
9Opto 1 (i/p)
* Opto Input – Trigger by strapping to ground.
Manager Output P rt
Type V.24/RS232 - Fixed DTE
Speed 96 bps (8,n,1)
Signals TXD, RXD, SIG GND
C nnect r 9-way Dsub Female
PIN SIGNAL
2RXD (i/p)
3TXD (o/p)
5SIG GND
6Relay 2 COM
7Relay 2 N/O
8GND
9Opto 2 (i/p)
* Opto Input – Trigger by strapping to ground.
Auxiliary Data P rt
The RS232 terminal interface can support auxiliary
bidirectional transmission of asynchronous data
over the ISDN and X21 network.
Type V.24/RS232 - Fixed DCE
Speed 96 bps (8,n,1)
Signals TXD, RXD, CTS, S GND
C nnect r 9-way Dsub Female
PIN SIGNAL
1Alarm N/C
2AUX RXD (o/p)
3AUX TXD (i/p)
4Alarm COM
5SIG GND
6Alarm N/O
8AUX CTS (o/p)
9Remote Trigger*
NOTE: The CTS output signal should be used for Flow
Control when Auxiliary Data is enabled.
Alarm Signal
The C53 ip provides a set of alarm relay contacts
with a minimum of .5 second duration. These relay
contacts are provided on the auxiliary data port
connector.
For connection information, please refer to the pin-
out detail of the auxiliary data connector. The
maximum voltage is 5 V.
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