T880/990/3000NET Addendum
3
Control Panel - Administrator Settings - Network - ISDN - ISDN-BRI Settings is replaced by:
External Network Settings
Before using the system together with external network equipment, you must specify the network
parameters on this page. The system has support for up to 768kbps* using the External Network
(RS449/V.35/X.21) interface. Note that the physical interface on External Networks is one non-
standard 26 pin connector.
Call Control
RS366
Dialing
RS366 Dialing would normally be used together with network clocking
RS449/V.35 Compatible when the external equipment uses RS366 ports.
RS366
Adtran
ISU 512
RS366 Adtran ISU 512 offers extra usability when dialing RS366 via an
ADTRAN ISU 512 IMUX. This dialing scheme will map the call type and
bandwidth selection to ADTRAN ISU 512 specific suffixes to the dialed number.
Should only be used when connected to an ADTRAN ISU 512.
The Adtran ISU512 uses the following suffixes <Number>#C#R
#C = Call Type
#2 = audio
#3 = 56kbps
#4 = 64kbps
#R = Channel Rate
#0 = 2xh221 (2x56\64kbps)
#1 to 8 = the Call Rate.
Leased
Line
Leased Line is a non-dialing protocol and should be used when two codecs are
connected in a point-to-point connection. Use Leased Line when the
handshaking signals DTR and CD are available. DTR and CD correspond to
the X.21 network
’
s C and I signals.
Manual
Manual should be used when no handshake signals are available and the
external equipment requires a constantly connected line.
Network clocking
The network clock setting specifies the number of physical external clock signals.
RS449/V35
Compatible
Use RS449/V35 Compatible when the external equipment provides
two clock signals, one for transmit and one for receive. The difference
between RS449 and V35 is only the cable.
X21
Compatible
Use X21 Compatible when the external equipment provides a
common clock signal for both transmit and receive.
* the TANDBERG 880 NET MXP supports 384kbps.
D13719.01
