SystemBase C310xr User manual

SystemBase
C310xr User Guide
Systembase Limited
PO Box 3572
Warminster
Wiltshire
BA12 6XQ
England
Web: www.systembase.com
Email: [email protected]
Telephone: [phone]
Fax: [phone]

2
CONTENTS
INTRODUCTION--3
Key Features--3
CONTROLS AND INDICATORS--4
VFD Display --4
VU Meters--4
VU Button--4
Menu Buttons--4
DIAL Button --4
HANG Button--5
Numerical 0 - 9 Buttons--5
MENU MAP--6
MENU SYSTEM--7
Unit Description--7
ISDN Status--7
Audio Status--7
Select Patch--7
Modify Patch--7
Patch Name--7
ISDN Options--8
ISDN Audio--8
Channel 1 / 2 Options--8
ISDN Destination Number--8
ISDN Destination Sub-Address--8
ISDN Local Number--8
ISDN Local Sub-Address--9
ISDN Channel Mapping--9
ISDN Caller Line Identification (CLI)--9
ISDN Data Rate--9
ISDN Auxiliary Data Port--10
Auto Hunt--10
Silence Timeout--10
X.21 Options--10
X.21 Audio--10
X.21 Auxiliary Data Port--10
X.21 Control Line--11
Backup Options--11
Backup Monitor--11
Restore Monitor--11
Reserve Dial--12
Audio Options--12
Audio Source--12
Audio Mixing--12
Audio Priority--12
AES/EBU Mode--13
Return Loop--13
AES RX Status--13
Codec Function--13
ISDN Mode--13
X.21 Mode--13
ISDN Backup Mode - Master / Slave--14
Dial On Audio Mode--14
Nailed Up Mode--14
Alarm--14
Loopback--14
ISDN Country Options--15
ISDN Country--15
ISDN SPID 1 to 2 (USA Only)--15
ISDN Local Number 1 to 2(USA Only)--15
Number Prefix --16
Password Protection--16
Set Defaults--16
Simple Menu--16
Last Caller Identification--16
Screen Saver--17
SIMPLE MENU MAP--17
SIMPLE MENU SYSTEM--18
Unit Description--18
ISDN Status--18
Audio Status--18
ISDN Audio--18
ISDN Destination Number --18
Loopback--19
ISDN Country Options--19
Password Protection--19
Simple Menu--19
Last Caller Identification--19
REMOTE MANAGEMENT--20
PHYSICAL CONNECTIONS--22
Analogue Audio--22
Digital Audio--22
ISDN Ports--22
X.21 Port--22
Remote Trigger--23
Manager Input Port--23
Manager Output Port--23
Auxiliary Data Port--23
Alarm Signal--23
Physical Properties--24
Power Requirements--24
Environmental Conditions--24
Calibration Information--24
Warranty Information--24

3
INTRODUCTION
The C310xr ISDN audio codec has been designed for the broadcast of high quality audio
over the ISDN and other digital networks, such as Switch-56, dedicated digital lines, optical
fibre networks, digital microwave links, satellite links, etc. To achieve an efficient utilisation
of the available network data bandwidth, the C310xr uses apt-XTM100 4:1 fixed audio com-
pression / decompression system to provide full duplex, point-to-point audio transmission.
Key Features
One Integral ISDN Terminal Adapters (64Kbps / 56Kbps)
12 International ISDN Standards - User Selectable from Front Panel
Real-time Applications - 3.8ms Coding Delay
AES/EBU Digital Audio Input & Output
Intelligent digital monoising feature
15.5KHz Mono or 7.5KHz Stereo Audio Over ISDN (128Kbps - 2B Channels)
2.4 / 4.8 / 9.6 Kbps RS232 Auxiliary Data Transmission
> 82dB Signal-to-Noise Ratio
15.6KHz Stereo Audio Over 256Kbps Via X.21
Bi-Directional - Full Duplex Operation
Studio-to-Transmitter Link (STL) with Automatic ISDN Backup
Full Remote Configuration via Management Ports
Dynamic Add or Delete ISDN Channels
Auto Hunt Mode Detection
Dial-On-Audio / Hang-On-Silence Operation
External Trigger Dial of ISDN Lines
Keypad & Crystal Clear VFD Display
26 Configuration Memories
85-260V AC Auto-ranging Power Supply

4
CONTROLS AND INDICATORS
VFD Display
A 20 character by 2 line VFD (Vacuum
Fluorescent Display), provides compre-
hensive information on the configuration
of the unit and current status.
VU Meters
20 bit Digital VU Meters for monitoring Left
and Right audio channels with Peak Hold.
The Meter range is -54dB to 0dB.
VU Button
Allows the user to monitor either the Input
or Output audio via the Digital VU Meters.
This button operates by toggling between
the Input and Output audio signals. Each
time it is depressed, it will cause the VFD
Display to flash the current selection for 1
second.
Note that if the current Patch Function is set to
Dial On Audio, the VU Button will be disabled since
the Input audio is being monitored continuously
for activity. The following message is displayed:
MENU : VU Meters
STATUS : Not Valid
Menu Buttons
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.
NO Menu NO / Cancel button is used to
answer No or 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
Unit Description display.
YES Menu YES / Confirm button is used
to answer YES or to confirm the configura-
tion change.
DIAL Button
The DIAL button is used to dial an ISDN
call.
(a) Manual Dial
The first depression of the DIAL button
will take the unit into the Manual Dial
menu as the first option. This allows the
user to type in an ISDN number via the
keypad. An optional sub-address can also
be specified by use of the button (trans-
lated to # on the display), followed by a
numerical sub-address:
MENU : Manual Dial
01256880123#1
Once the ISDN number has been en-
tered, a second depression of the DIAL
button instructs the unit to dial the dis-
played ISDN number. The call status is
then displayed as follows:
B1: Ready B2: Ready
Then,
B1: Dial B2: Ready
If the call has successfully connected then
the following is displayed:
B1: Con B2: Ready
If the call fails to be established, then one
of the following diagnostics messages is
displayed for 1 seconds:
ISDN CLEARING
Together with:
Error
Remote Error
Disconnected
Number Unobtainable
Number Incomplete
Number Changed
Network Busy
Number Busy
Line Out Of Service
Not Allowed
Acknowledgment
No Reply
Incompatible Dest
To Dial the second channel B2, repeat the
above procedure for each. The audio
bandwidth will automatically adjust to

5
include the additional B Channel.
Note: The Manual Dial Option will use the Audio
configurations for the currently selected patch.
(b) Patch / Memory Dial The first depres-
sion of the DIAL button followed immedi-
ately by a second depression will take the
unit into the Patch / Memory Dial menu,
allowing the user to access 1 of 26 pre-
stored configuration memories:
MENU : Patch Dial
PATCH A
The and buttons can be used to
select the required patch (1 of 26). A third
depression of the DIAL button instructs
the unit to dial the ISDN numbers associ-
ated with the selected patch. The call
status is then displayed as (a) above.
If any of the ISDN calls fail to be estab-
lished, the user can request the unit to
redial the failed calls by pressing the DIAL
button twice, or by pressing the DIAL
button followed by the ISDN telephone
number.
HANG Button
The HANG button is used to hang-up the
ISDN calls. The following message will be
displayed for 2 seconds:
MENU : Hangup
STATUS : Clear
If there is no call to hang-up, then the
following is displayed for 2 seconds:
MENU : Hangup
STATUS : No Call
Numerical 0 - 9 Buttons
The 0 - 9 Numerical Keypad allows entry of
ISDN numbers, sub-address information
and for use in patch names.

6
TITLE
SCREEN
ISDN
STATUS
AUDIO
STATUS
SELECT
PATCH
MODIFY
PATCH
PATCH
NAME
LOOP
BACK
ISDN
OPTIONS
ISDN
AUDIO
X21
OPTIONS
X21
AUDIO
CHANNEL 1
OPTIONS
BACKUP
OPTIONS
BACKUP
MONITOR
X21 AUX
DATA
CHANNEL 2
OPTIONS
RESTORE
MONITOR
X21
CTL LINE
RESERVE
DIALLING
AUDIO
OPTIONS
AUDIO
SOURCE
ISDN DEST
NUMBER
CH2
ISDN DEST
NUMBER
CH1
CODEC
FUNCTION
AUDIO
MIXING
ISDN DATA
RATE
ISDN DEST
SUB
ADDRESS
CH2
ISDN DEST
SUB
ADDRESS
CH1
ALARM AUDIO
PRIORITY
ISDN AUX
DATA
ISDN LOC
NUMBER
CH2
ISDN LOC
NUMBER
CH1
AES/EBU
MODE
AUTO
HUNT
ISDN LOC
SUB
ADDRESS
CH2
ISDN LOC
SUB
ADDRESS
CH1
RETURN
LOOP
SILENCE
TIMEOUT
ISDN
CHANNEL
MAP CH2
ISDN
CHANNEL
MAP CH1
AES RX
STATUS
ISDN CLI
CH2
ISDN CLI
CH1
COUNTRY
OPTIONS
ISDN
COUNTRY
PASSWORD
SET
PASSWORD
& LEVEL
ISDN
SPID 1
SET
DEFAULTS
ISDN
SPID 2
SIMPLE
MENU
ISDN LOC
NUM 1
CALLER
ID
ISDN LOC
NUM 2
NUMBER
PREFIX
MENU MAP
 UP
 DOWN
 RIGHT / EDIT
YES CONFIRM EDIT
NO ABORT EDIT / LEFT(BACK)

7
MENU SYSTEM
The menu system on the C310xr Audio
Codec has been designed to allow the
user to configure the unit with ease. Five
keys are used to drive the menu system :-
 UP
 DOWN
 RIGHT / EDIT
YES CONFIRM EDIT
NO ABORT EDIT / LEFT(BACK)
Unit Description
The software release and serial number of
the unit are displayed on the Title screen
as follows :-
SYSTEMBASE C310xr(c)
REL 013 S/N 0044-001
ISDN Status
The status of the ISDN B Channels is
accessed by pressing the button when
the Title Screen is shown, and is dis-
played as follows :-
B1: Ready B2: Ready
The ISDN status options are:
load (loading patch)
Ready (layer 1 activated)
Synch (Bad Line)
Dorm (dormant)
Dial (dialling)
Con (connected)
Clear (clearing)
Incom (incoming)
Note: If the C310xr is configured in X.21 Mode, the
ISDN port can still function, however the audio will
not be routed through to the ISDN connector.
Audio Status
The status of the received audio and the
current operating mode of the codec is
accessed by pressing the button, and is
displayed in the following format :-
AUDIO STATUS: SYNC
MODE: 15KHz Stereo
The C310xr has been designed to Mute
the audio signal if end-to-end synchronisa-
tion is not achieved. The operating Mode
shown here is the actual mode in which
the codec has achieved end-to-end syn-
chronisation, and not necessarily the
configured mode, since the C310xr has
the capability of intelligently changing the
mode depending on the Audio Priority
and Auto Hunt configurations.
Select Patch
The select patch menu is used to load one
of the 26 available patches (memories).
Once loaded, the user may edit the set-
tings associated with the selected patch.
MENU : Select Patch
STATUS : PATCH A
The button is used to edit the current
selection, the display changes as follows:
EDIT : Select Patch
OPTION : PATCH A
The and buttons can be used to
select the required patch:
OPTIONS : PATCH A to PATCH Z
The YES button is used to confirm the
selection, the NO button to abort the edit.
Modify Patch
The next menu is the modify Patch /
Memory screen:
MENU : Modify Patch
STATUS : PATCH A
The button is used to enter the next
level of the menu system, which allows
the user to modify the parameters associ-
ated with each patch.
Patch Name
MENU : Patch Name
STATUS : PATCH A
The button can now be used to edit the
patch name, the display changes as
follows:
EDIT : Patch Name

8
The and buttons can be used to
scroll through A - Z and 0 - 9, the numeri-
cal keypad can also be used for entry. The
button confirms the character selec-
tion and moves to the next character
position. There is no facility to edit a
character once it has been confirmed. On
completion of entry of up to 10 characters,
press the YES button to save the changes,
and the NO button to abort the changes:
MENU : Patch Name
LONDON
ISDN Options
MENU : ISDN OPTIONS
The button is used to enter the next
level of the menu system, which allows
the user to modify the parameters associ-
ated with ISDN operation of the unit.
ISDN Audio
MENU : ISDN Audio
STATUS : 15KHz Mono
The button can now be used to edit the
ISDN Audio mode, the display changes as
follows:
EDIT : ISDN Audio
OPTION : 15KHz Mono
The and buttons can be used to
select the required ISDN Audio mode:
7.5KHz Mono
15KHz Mono
3.7KHz Stereo
7.5KHz Stereo
The YES button is used to confirm the
selection, the NO button to abort the edit.
The user can also change the ISDN Audio
mode dynamically while ISDN calls are
connected, and automatically add or
delete ISDN B Channels as required.
NO TE: When operating in Mono, only the Left Input
and Left Output audio channels are active if the
Audio Mixing option has been switched OFF.
Channel 1 / 2 Options
MENU : Ch1 Options
The button is used to edit the ISDN
parameter associated with each ISDN B
Channel. The following 6 option menus
are repeated for both channels.
ISDN Destination Number
MENU : ISDN Dest Num
Null
The button is used to edit the ISDN
Destination Number, the display changes
as follows:
EDIT : ISDN Dest Num
The and buttons can be used to
scroll through 0 - 9, the numerical keypad
can also be used for entry. The button
confirms the character selection and
moves to the next character position.
There is no facility to edit a character once
it has been confirmed. On completion of
entry of up to 18 digits, press the YES
button to save the changes, and the NO
button to abort the changes:
MENU : ISDN Dest Num
01256880123
ISDN Destination Sub-Address
MENU : ISDN Dest Sub
Null
The button is used to edit the ISDN
Destination Sub-Address, applicable only
if subscribed to. The display changes as
follows:
EDIT : ISDN Dest Sub
The  and buttons can be used to
scroll through A - Z and 0 - 9, the numeri-
cal keypad can also be used for entry. The
button confirms the character selec-
tion and moves to the next character
position. There is no facility to edit a
character once it has been confirmed. On
completion of entry of up to 6 characters,
press the YES button to save the changes,
and the NO button to abort the changes:
MENU : ISDN Dest Sub
1

9
ISDN Local Number
MENU : ISDN Loc Num
Null
The button is used to edit the ISDN
Local Number, applicable only if sub-
scribed to Multiple Subscriber Number-
ing (MSN). The display changes as follows:
EDIT : ISDN Loc Num
The and buttons can be used to
scroll through 0 - 9, the numerical keypad
can also be used for entry. The button
confirms the character selection and
moves to the next character position.
There is no facility to edit a character once
it has been confirmed. On completion of
entry of up to 18 digits, press the YES
button to save the changes, and the NO
button to abort the changes:
MENU : ISDN Loc Num
01256880123
ISDN Local Sub-Address
MENU : ISDN Loc Sub
Null
The button is used to edit the ISDN
Local Sub-Address, the display changes
as follows:
EDIT : ISDN Loc Sub
The and buttons can be used to
scroll through A - Z and 0 - 9, the numeri-
cal keypad can also be used for entry. The
button confirms the character selec-
tion and moves to the next character
position. There is no facility to edit a
character once it has been confirmed. On
completion of entry of up to 6 characters,
press the YES button to save the changes,
and the NO button to abort the changes:
MENU : ISDN Loc Sub 1
ISDN Channel Mapping
MENU : ISDN Chan Map
STATUS : B1
The button can now be used to select
the ISDN Channel Mapping, the display
changes as follows:
EDIT : ISDN Chan Map
OPTION : B1
The and buttons can be used to
scroll through the options:
OPTIONS : B1&B2, B1, B2
Press the YES button to save the changes,
and the NO button to abort the changes:
MENU : ISDN Chan Map
STATUS : B2
ISDN Caller Line Identification (CLI)
MENU : ISDN CLI
Null
The button is used to edit the ISDN
Caller Line Identification, which is appli-
cable only if subscribed to. The display
changes as follows:
EDIT : ISDN CLI
The and buttons can be used to
scroll through 0 - 9, the numerical keypad
can also be used for entry. The button
confirms the character selection and
moves to the next character position.
There is no facility to edit a character once
it has been confirmed. On completion of
entry of up to 18 digits, press the YES
button to save the changes, and the NO
button to abort the changes:
MENU : ISDN CLI
01256880123
ISDN Data Rate
MENU : ISDN Data Rate
STATUS : 64Kbps
The button can now be used to select
the ISDN Data Rate, the display changes
as follows:

10
EDIT : ISDN Data Rate
OPTION : 64Kbps
The and buttons can be used to
scroll through the options:
OPTIONS : 64Kbps, 56Kbps
Press the YES button to save the changes,
and the NO button to abort the changes:
MENU : ISDN Data Rate
STATUS : 56Kbps
ISDN Auxiliary Data Port
MENU : ISDN Aux Data
STATUS : Off
The button can now be used to select
the ISDN Auxiliary Data Port Mode, the
display changes as follows:
EDIT : ISDN Aux Data
OPTION : Off
The and buttons can be used to
scroll through the options:
Off
2400bps
4800bps
9600bps
Press the YES button to save the changes,
and the NO button to abort the changes:
MENU : ISDN Aux Data
OPTION : 9600bps
NO TE: CTS output signal should be used for Flow
Control when Auxiliary Data is enabled.
Auto Hunt
(Detect Incoming Audio Mode)
MENU : Auto Hunt
STATUS: Off
The button is used to edit the Auto
Hunt mode. The display changes as
follows:
EDIT : Auto Hunt
OPTION: Off
The and buttons can be used to
select either ‘On’ or ‘Off’. If ‘On’ is selected
then the codec will automatically detect
the format of the incoming audio and re-
configure its mode to match. The re-
configuration is for the duration of the
incoming call, the C310xr codec will revert
back to the original configuration when
the call is terminated.
Silence Timeout
(Dial on Audio)
MENU : Silence Timeout
STATUS: 1 minute
The button is used to edit the Silence
Timeout period associated with the Dial
On Audio / Hang on Silence mode of opera-
tion. The display changes as follows:
EDIT : Silence Timeout
STATUS: 1 minute
The and buttons can be used to
change the Silence Timeout period in
multiples of 1 minute, up to a maximum of
8 minutes. The Patch Function must be
set to Dial On Audio for the Silence
Timeout period to be active.
X.21 Options
The button is once again used to enter
the next level of the menu system, which
allows the user to modify the parameters
associated with X.21 operation.
X.21 Audio
MENU : X.21 Audio
STATUS : 15KHz Stereo
The button can now be used to edit the
X.21 Audio mode, the display changes as
follows:
EDIT : X.21 Audio
OPTION : 15KHz Stereo
The and buttons can be used to
select the required X.21 Audio mode:
7.5KHz Mono
15KHz Mono
3.7KHz Stereo

11
7.5KHz Stereo
12KHz Stereo
15KHz Stereo
The YES button is used to confirm the
selection, the NO button to abort the edit:
MENU : X.21 Audio
STATUS : 15KHz Stereo
NOTE: When operating in Mono, only the Left Input
and Left Output audio channels are active if the
Audio Mixing option has been switched OFF.
X.21 Auxiliary Data Port
MENU : X.21 Aux Data
STATUS : Off
The button can now be used to select
the X.21 Auxiliary Data Port Mode, the
display changes as follows:
EDIT : X.21 Aux Data
OPTION : Off
The and buttons can be used to
scroll through the options:
Off
2400bps
4800bps
9600bps
Press the YES button to save the changes,
and the NO button to abort the changes:
MENU : X.21 Aux Data
OPTION : 9600bps
NOTE: CTS output signal should be used for Flow
Control when Auxiliary Data is enabled.
X.21 Control Line
MENU : X.21 Ctl Line
STATUS : Off
The button is used to enable/disable
the X.21 Control Line, the display changes
as follows:
EDIT : X.21 Ctl Line
OPTION : Off
The and buttons can be used to
scroll through the options:
OPTIONS : Off, On
Press the YES button to save the changes,
and the NO button to abort the changes:
MENU : X.21 Ctl Line
OPTION : On
Backup Options
The button is used to enter the next
level of the menu system, which allows
the user to modify the parameters associ-
ated with the automatic ISDN Backup and
Restore operation.
NO TE: The Backup Level and Restore Time are global
settings, and not per Patch memory.
Backup Monitor
MENU : Backup Monitor
Level = 050 Errors = 000
This menu displays the number of Sync
Loss Errors in the last 10 seconds, (sam-
pled at 100ms intervals), and the Level at
which the automatic ISDN Backup is
initiated. The Backup Level can be set to
different values on the Master and Slave
units, in order to bias the sensitivity of the
link in either direction. The button can
be used to edit the Backup Level , the
display changes as follows:
EDIT : Backup Monitor
Level = 050 Errors = 000
The and buttons can be used to
select the required Backup Level (0 to
100).
The YES button is used to confirm the
selection, the NO button to abort the edit:
MENU : Backup Monitor
Level = 004 Errors = 000
Restore Monitor
MENU : Restore Monitor
Time = 05s Errors = 000
(Factory Defaults)
This menu displays the number of Data

12
Block Errors in the last 10 seconds, (sam-
pled at 100ms intervals), when the ISDN
Backup has successfully been established.
The menu also displays the Restore Time
in seconds of error free data throughput,
after which the automatic X.21 Restore is
initiated. The Restore Time setting and
the Errors display are only relevant when
the codec is operating in the Backup
Master mode.
The button can be used to edit the
Restore Time , the display changes as
follows:
EDIT : Restore Monitor
Time = 05s Errors = 000
The and buttons can be used to
select the required Restore Time (1 to 90
seconds).
The YES button is used to confirm the
selection, the NO button to abort the edit:
MENU : Restore Monitor
Time = 10s Errors = 000
Reserve Dial
MENU : Reserve Dial
Status:Off
(Factory Defaults)
This menu is used to enable reserve
dialing. When enabled, reserve dialing will
allow the codec to automatically dial a
secondary location in the event of a total
primary location failure. The ISDN dialling
details for the secondary site are obtained
from the adjacent patch to that already
selected (i.e. patch+1). This function is
only active when a codec is configured for
backup Master mode.
Audio Options
The button is used to enter the next
level of the menu system, which allows
the user to select the available audio
options.
Audio Source
MENU : Audio Source
STATUS : Analog
The button can now be used to edit the
Audio Source (Analog or Digital), the
display changes as follows:
EDIT : Audio Source
OPTION : Analog
The and buttons can be used to
select the required Audio Source:
OPTIONS : Analog, AES/EBU
The YES button is used to confirm the
selection, the NO button to abort the edit:
MENU : Audio Source
STATUS : AES/EBU
NO TE: The digital audio port of the C310xr provides
both input and output digital sample rate
conversion.
Audio Mixing
The C310xr codec can be configured to
digitally monoise the selected audio
source, by mixing the Left and Right
signals with a 6dB pad. The monoised
signal is replicated to both Analog and
Digital (AES/EBU) Left and Right output
channels.
MENU : Audio Mixing
STATUS : Off
The button can now be used to select
the Audio Mixing function (On or Off), the
display changes as follows:
EDIT : Audio Mixing
OPTION : Off
The and buttons can be used to
change the setting. The YES button is
used to confirm the selection, the NO
button to abort the edit:
MENU : Audio Mixing
STATUS : On
NOTE: Mixing only functions when operating on
ISDN
Audio Priority
If a problem occurs on the ISDN telephone
exchange, and some of the ISDN calls are
terminated, the C310xr codec will auto-

13
matically drop back and use the data
bandwidth on the remaining ISDN calls to
give the best possible audio circuit. The
C310xr codec can be configured to give
priority to either Audio Bandwidth or
Stereo image, when deciding what operat-
ing mode it can drop back to.
MENU : Audio Priority
STATUS : Bandwidth
The button can now be used to select
the Audio Priority (Bandwidth or Stereo),
the display changes as follows:
EDIT : Audio Priority
OPTION : Bandwidth
The and buttons can be used to
change the setting. The YES button is
used to confirm the selection, the NO
button to abort the edit:
MENU : Audio Priority
STATUS : Stereo
AES/EBU Mode
This menu is used to define the clocking
scheme used for the AES/EBU output
port. If a external clock source is selected,
then the interface timing is derived from
the AES/EBU signal presented at the
codec’s input interface. The AES/EBU
interface will automatically sample rate
convert both the input and output digital
audio bit streams.
NO TE: the maximum sample rate conversion ratio
permitted is 3:1.
MENU : AES/EBU Mode
STATUS : 32KHz EXT
The button can now be used to select
the AES/EBU Mode, the display changes
as follows:
EDIT : AES/EBU Mode
OPTION : 48KHz INT
The and buttons can be used to
change the setting. The YES button is
used to confirm the selection, the NO
button to abort the edit:
MENU : AES/EBU Mode
STATUS : 48KHz INT
Return Loop
If enabled, the return loop will take a
digital copy of the output PCM audio
stream and use it as the selected input
source. This feature is particularly useful
for setting up a monitoring point at a
transmitter installation.
MENU : Return Loop
STATUS : Off
The button can now be used to select
the required mode, the display changes
as follows:
EDIT : Return Loop
OPTION : On
The and buttons can be used to
change the setting. The YES button is
used to confirm the selection, the NO
button to abort the edit:
MENU : Return Loop
STATUS : On
AES RX Status
This status screen displays information
about the AES/EBU input data stream.
AES RX Status: Error
Professional Mode
Options:
Error / Ok
Professional Mode / Consumer Mode
Codec Function
The C310xr Codec can operate in 1 of 6
selectable modes :-
The button is used to select the Operat-
ing Mode for the current patch.
MENU : Codec Function
STATUS : ISDN Mode
The display changes as follows:
EDIT : Codec Function
OPTION : ISDN Mode
The and buttons can be used to
scroll through the options:

14
ISDN Mode
X.21 Mode
Backup Master
Backup Slave
Dial On Audio
Nailed Up
Press the YES button to save the changes,
and the NO button to abort the changes:
MENU : Codec Function
STATUS : Backup Slave
ISDN Mode
In ISDN mode, the ISDN ports are the
primary network interface and the X.21
port is the secondary network interface. If
there are no ISDN calls connected, the
audio will be routed to the X.21 port by
default.
X.21 Mode
When operating in X.21 mode, the C310xr
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, how-
ever the audio will not be routed through to
the ISDN connections.
ISDN Backup Mode - Master / Slave
In the X.21 with ISDN Backup mode, the
unit at one end of the X.21 line should be
configured as a Backup Master unit and
the other unit should be configured as a
Backup Slave unit. This prevents both
units initiating the ISDN Backup, which
can cause a call conflict. The automatic
ISDN Backup is initiated following 5
seconds of loss of synchronisation on the
X.21 line. The X.21 Restore occurs follow-
ing 10 seconds of continuous error free,
test data transmissions on the X.21 line.
The Backup and Restore time settings
can be modified from these factory de-
faults using the Backup Options menu.
NO TE: When operating in X.21 with ISDN Backup
mode, it is advised that the DCE should carry X.21
termination resistors, please contact Systembase
Limited or an authorised distributor for further
information.
Dial On Audio Mode
When operating in Dial On Audio mode,
the Left and Right Input audio channels
are monitored continuously for activity.
On detection of a signal which is above -
18dB, the unit will automatically dial the
pre-configured ISDN number for the
current patch. If the ISDN call fails to be
established for any reason, the unit will
automatically re-dial until it has success-
fully connected. Similarly, if the ISDN call
is terminated, other than by the unit
which initiated the call, a re-dial will be
activated automatically.
Once the ISDN call has been established
the Silence Timeout period is used to
determine when the call is terminated.
The Silence Timeout period can be set by
the user to a minimum of 1 minute and a
maximum of 8 minutes, in increments of 1
minute.
The ISDN call can also be manually termi-
nated by the unit which initiated the call,
using the HANG button.
NO TE: When operating in Dial On Audio Mode the
LoopBack function is disabled and the VU Meters
are locked to monitor the input audio only. The
user can not change the VU Meter setting to
monitor the output audio. In addition the
C310xr will loop back the audio when no isdn
call is present.
Nailed Up Mode
The C310xr codec can be used over
Nailed Up ISDN lines, available in some
countries for fixed point-to-point digital
transmissions. The DIAL and HANG
buttons are not required in Nailed Up
mode and are therefore disabled. The
audio format used in nailed up mode is
defined within the ISDN OPTIONS menu.
Alarm
MENU : Alarm
STATUS : Off
The button is used to select the Alarm
Mode, the display changes as follows:
EDIT : Alarm
OPTION : Off
The and buttons can be used to
scroll through the options:

15
Off
Sync Loss
Backup
Press the YES button to save the changes,
and the NO button to abort the changes:
MENU : Alarm
STATUS : Sync Loss
Loopback
The C310xr can be configured to provide
an internal digital loopback of the com-
pressed audio signal prior to the X.21 /
ISDN interface. A loopback of the receive
signal also occurs as a result, enabling the
units to be tested independently. The
loopback function will automatically use
the highest data rate available.
MENU : Loopback
STATUS : Loop Off
The button is used to select the
Loopback Mode, the display changes as
follows:
EDIT : Loopback
OPTION : Loop On
The and buttons can be used to
scroll through the options:
OPTIONS : Loop On, Loop Off
Press the YES button to save the changes,
and the NO button to abort the changes:
MENU : Loopback
STATUS : Loop On
NO TE : The loopback function is not available when
operating in Dial On Audio, Backup Master, or
Backup Slave modes.
ISDN Country Options
There are a number of ISDN parameters
associated with different countries and
regions in the world, these can be readily
re-configured on the C310xr Codec.
NO TE : It is important that the ISDN line should be
disconnected from the C310xr Codec before any
changes are made.
ISDN Country
The C310xr can be re-configured to
operate on 1 of 12 International ISDN
Standards.
MENU : ISDN Country
STATUS : EURO ETSI
The button is used to select the ISDN
Country / Standard, the display changes
as follows:
EDIT : ISDN Country
OPTION : EURO ETSI
The and buttons can be used to
scroll through the options:
EURO ETSI
New Zealand
China*
Eire
France VN3
Israel*
Japan
Australia*
Holland
DMS100 (USA)
Custom 5ESS (USA)
National 1 (USA)
*Pending Approvals
Press the YES button to save the changes,
and the NO button to abort the changes.
Then confirm the change by pressing YES
and wait while the C310xr is configured for
the new ISDN Country:
MENU : ISDN Country
STATUS : Holland
ISDN SPID 1 to 2 (USA Only)
MENU : ISDN SPID 1
Null
The button is used to edit the ISDN
SPID Codes which are required for opera-
tion in the USA (National 1, DMS100 &
Custom 5ESS). The display changes as
follows:
EDIT : ISDN SPID 1
The and buttons can be used to
scroll through 0 - 9, the numerical keypad
can also be used for entry. The button
confirms the character selection and
moves to the next character position.
There is no facility to edit a character once

16
it has been confirmed. On completion of
entry of up to 18 characters, press the
YES button to save the changes, and the
NO button to abort the changes:
MENU : ISDN SPID 1
001441256880123
ISDN Local Number 1 to 2(USA
Only)
MENU : ISDN Loc Num 1
Null
The button is used to edit the ISDN
Local Number for B Channels 1and 2. The
display changes as follows:
EDIT : ISDN Loc Num 1
The and buttons can be used to
scroll through 0 - 9, or the numerical
keypad can be used for entry. The 
button confirms the character selection
and moves to the next character position.
There is no facility to edit a character once
it has been confirmed. On completion of
entry of up to 18 characters, press the
YES button to save the changes, and the
NO button to abort the changes:
MENU : ISDN Loc Num 1
01256880123
Number Prefix
(For Access Dialling Codes)
MENU : Number Prefix
Null
The button is used to edit the Number
Prefix. The display changes as follows:
EDIT : Number Prefix
The and buttons can be used to
scroll through 0 - 9, or the numerical
keypad can be used for entry. The 
button confirms the character selection
and moves to the next character position.
There is no facility to edit a character once
it has been confirmed. On completion of
entry of up to 5 digits, press the YES
button to save the changes, and the NO
button to abort the changes:
MENU : Number Prefix
10288
Password Protection
The C310xr has two levels of password
protection to avoid accidental re-configu-
ration, the user can view all configuration
menus but is not allowed to make any
changes - the YES button is disabled. Edit
Lock enables ISDN calls to dialled and
hanged. Full Lock disables ISDN dial and
hang, however, incoming ISDN calls will
be answered.
MENU : Password
STATUS : Not Set
The button is used to edit the Password
Level to one of the following: Not Set, Edit
Lock or Full Lock. The display changes as
follows:
MENU : Password
STATUS : Edit Lock
Press the YES button to confirm, and the
NO button to abort.
Set Defaults
This menu allows the user to re-configure
all the patches back to Factory Defaults.
NOTE: Any changes made to the patch configura-
tions will be lost, there is no Undo option.
MENU : Set Defaults
The button is used to select the Set
Defaults option, the display changes as
follows:
MENU : Set Defaults
Confirm Yes/No ?
Press the YES button to confirm, and the
NO button to abort.
MENU : Set Defaults
Simple Menu

17
The Simple Menu option allows the users
to select the ISDN audio mode and enter
the ISDN telephone numbers quickly
without having to go through the full
menu structure. The original advance
menu options are accessible by disabling
(Off) the Simple Menu mode. Therefore,
parameters such as sub-addressing and
CLI can be specified if required.
MENU : Simple Menu
STATUS: Off
The button is used to enable (On) or
disable (Off) the Simple Menu. Press the
YES button to confirm, and the NO button
to abort.
Last Caller Identification
The C310xr can store the ISDN telephone
number of the last incoming call. This
feature requires Caller Line Identification
(CLI) to be enabled on the ISDN line,
which is usually provided as an option
when the ISDN line is installed. If Caller
Line Identification (CLI) is not enabled,
then the following will be displayed:
MENU : Caller ID
Null
If Caller Line Identification (CLI) is ena-
bled, then the ISDN number will be
displayed:
MENU : Caller ID
01256880123
Screen Saver
The screen saver appears as a * con-
stantly moving from left to right on the top
row of the VFD display module. The
screen saver will automatically start 1
hour following the last event on either the
C310xr keypad or display module. Nor-
mal display operation is resumed by the
occurrence of any event on the C310xr.
Note : The screen saver function is automatically
disabled when the unit is operating in Simple Menu
mode.
SIMPLE MENU MAP
TITLE
SCREEN
ISDN
STATUS
AUDIO
STATUS
ISDN
AUDIO
ISDN DEST
NUMBER
CH1
ISDN DEST
NUMBER
CH2
LOOP
BACK
COUNTRY
OPTIONS
ISDN
COUNTRY
PASSWORD
SET
PASSWORD
& LEVEL
ISDN
SPID 1
SIMPLE
MENU
ISDN
SPID 2
CALLER
ID
ISDN LOC
NUM 1
ISDN LOC
NUM 2
NUMBER
PREFIX
 UP
 DOWN
 RIGHT / EDIT
YES CONFIRM EDIT
NO ABORT EDIT / LEFT(BACK)

18
SIMPLE MENU SYSTEM
The Simple Menu system on the C310xr
Audio Codec has been designed to allow
the user to configure the essential param-
eters quickly. Five keys are used to drive
the menu system :-
 UP
 DOWN
 RIGHT / EDIT
YES CONFIRM EDIT
NO ABORT EDIT / LEFT(BACK)
NOTE: The screen saver function is automatically
disabled when the unit is operating in Simple Menu
mode.
Unit Description
The software release and serial number of
the unit are displayed on the Title screen
as follows :-
SYSTEMBASE C310xr(c)
REL 002 S/N 0044-001
ISDN Status
The status of the ISDN B Channels is
accessed by pressing the button when
the Title Screen is shown, and is dis-
played as follows :-
B1: Ready B2: Ready
The ISDN status options are:
load (loading patch)
Ready (layer 1 activated)
Synch (Bad Line)
Dorm (dormant)
Dial (dialling)
Con (connected)
Clear (clearing)
Incom (incoming)
NOTE: If the C310xr is configured in X.21 Mode,
the ISDN port can still function, however the audio
will not be routed through to the ISDN connector.
Audio Status
The status of the received audio and the
current operating mode of the codec is
accessed by pressing the button, and is
displayed as follows :-
AUDIO STATUS: SYNC
MODE: 15KHz Stereo
The C310xr has been designed to Mute
the audio signal if end-to-end synchroni-
sation is not achieved. The operating
Mode shown here is the actual mode in
which the codec has achieved end-to-end
synchronisation, and not necessarily the
configured mode, since the C310xr has
the capability of intelligently changing the
mode depending on the Audio Priority
and Auto Hunt configurations.
ISDN Audio
MENU : ISDN Audio
STATUS : 15KHz Mono
The button can now be used to edit the
ISDN Audio mode, the display changes as
follows:
EDIT : ISDN Audio
OPTION : 15KHz Mono
The and buttons can be used to
select the required ISDN Audio mode:
The YES button is used to confirm the
selection, the NO button to abort the edit.
The user can also change the ISDN Audio
mode dynamically while ISDN calls are
connected, and automatically add or
delete ISDN B Channels as required.
NO TE: When operating in Mono, only the Left Input
and Left Output audio channels are active if the
Audio Mixing option has been switched OFF.
ISDN Destination Number
MENU : ISDN Dest Num 1
Null
The button is used to edit the ISDN
Destination Number, the display changes
as follows:
EDIT : ISDN Dest Num 1
The and buttons can be used to
scroll through 0 - 9, the numerical keypad
can also be used for entry. The button
confirms the character selection and
moves to the next character position.

19
There is no facility to edit a character once
it has been confirmed. On completion of
entry of up to 18 digits, press the YES
button to save the changes, and the NO
button to abort the changes:
MENU : ISDN Dest Num 1
01256880123
Loopback
The C310xr can be configured to provide
an internal digital loopback of the com-
pressed audio signal prior to the X.21 /
ISDN interface. A loopback of the receive
signal also occurs as a result, enabling the
units to be tested independently. The
loopback function will automatically use
the highest data speed supported.
NO TE : The loopback function is not available when
operating in Dial On Audio, Backup Master, or
Backup Slave modes.
ISDN Country Options
There are a number of ISDN parameters
associated with different countries and
regions in the world, these can be readily
re-configured on the C310xr Codec.
Please refer to section ISDN Country
Options for full details.
Password Protection
The C310xr has two levels of password
protection to avoid accidental re-configu-
ration, the user can view all configuration
menus but is not allowed to make any
changes - the YES button is disabled. Edit
Lock enables ISDN calls to dialled and
hanged. Full Lock disables ISDN dial and
hang, however, incoming ISDN calls will
be answered.
MENU : Password
STATUS : Not Set
The button is used to edit the Password
Level to one of the following: Not Set, Edit
Lock or Full Lock. The display changes as
follows:
MENU : Password
STATUS : Edit Lock
Press the YES button to confirm, and the
NO button to abort.
Simple Menu
The Simple Menu option allows the user to
select the ISDN audio mode and enter the
ISDN telephone numbers quickly without
having to go through the full menu struc-
ture. The original advance menu options
are accessible by disabling (Off) the Simple
Menu mode. Therefore, parameters such
as sub-addressing and CLI can be specified
if required.
MENU : Simple Menu
STATUS: Off
The button is used to enable (On) or
disable (Off) the Simple Menu. Press the
YES button to confirm, and the NO button
to abort.
Last Caller Identification
The C310xr can store the ISDN telephone
number of the last incoming call. This
feature requires Caller Line Identification
(CLI) to be enabled on the ISDN line,
which is usually provided as an option
when the ISDN line is installed. If Caller
Line Identification (CLI) is not enabled,
then the following will be displayed:
MENU : Caller ID
Null
If Caller Line Identification (CLI) is ena-
bled, then the ISDN number will be
displayed:
MENU : Caller ID
01256880123

20
REMOTE MANAGEMENT
The C310xr 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 C310xr units which can be linked to-
gether 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. Then type the following :-
poll 0044-001 <CR>
0044-001 is only an example, and should be replaced by the actual serial number of the unit you wish to configure.
<CR> = carriage return / enter
0044-001>
A prompt of the actual serial number will appear on the screen. The unit is now ready to
receive commands.
help <CR>
Type help for a complete list of commands and options. The ? key will also have the same
action.
The format of the commands are displayed as follows :-
0044-001 >help
C310xr Network Commands, (c) Systembase Limited
poll (8 digit serial number of unit to be selected)
list (to display all patch numbers and names)
select (patch number)
status (/s for short format)
isdn status (displays the current isdn status)
alarm status (displays the current alarm status)
sync status (displays the decoder status)
caller id (displays the number of the last caller)
dial (dial selected patch)
hang (hangup current call)
set name (10 characters)
set mode (isdn, x21, master, slave, audio, nailed up)
set loop (on, off)
set alarm (off, backup, sync)
set isdn (3k7 stereo, 7k5 mono, 7k5 stereo, 15k mono)
set isdn aux (off, 2400, 4800, 9600)
set auto hunt (on, off)
set speed (56k, 64k)