Cisco
TelePresence
ISDN
Link
Administrator
Guide
D14954.04 ISDN Link Administrator Guide IL1.1.2, MARCH 2015.
Copyright © 2015 Cisco Systems, Inc. All rights reserved.
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Descriptions of the ISDN Link configurations
In the following pages you will find a description of each item found in the ISDN Link
Configuration menu.
E1 configuration
E1 Interface [1..1] CRC4
e1 CRC-4 (Cyclic Redundancy Check 4-bit) is used for most e1-PRI configurations.
Value space:
<Off/On>
Off:
Some manufactures do not support this feature. By setting e1 CRC4 to off this
functionality will be disabled.
On:
When set to on, the Cyclic Redundancy Check is enabled. the default value is on.
ExternalNetwork configuration
ExternalNetwork Interface [1..1] CallControl
Configure the dialling sheme which is compatible with the external equipment.
Value space:
<Manual/RS366/RS366AdtranIMUX/RS366CustomIMUX/LeasedLine>
Manual:
Select Manual used when no handshake signals are available and the external
equipment requires a constantly connected line.
RS366:
this is the only dialling protocol supported and would normally be used together
with Dual network clocking when the external equipment uses RS366 ports.
RS366AdtranIMUX:
this setting offers extra usability when dialling RS366 via an ADtRAN
IMuX. this dialling scheme will map the call type and bandwidth selection to ADtRAN IMuX
specific suffixes to the dialled number. Should only be used when connected to an ADtRAN
IMuX. the Adtran IMuX uses the following suffixes: <Number>#C#R.
#C = Call Type
#2 = audio (telephony)
#3 = 56kbps (restricted)
#4 = 64kbps (unrestricted)
#R = Channel Rate
#0 = 2xh221 (2x56/64kbps)
#n, where n is one of [1, 2, 3, 4, 5, 6, 8, 12, 18, 23, 30]; ie n*64kbps
RS366CustomIMUX:
uses a custom prefix/suffix table which describes the available
bandwidths. the system administrator shall be able to specify the IMuX prefix/suffix table for
the following bandwidths (kbps): 64, 64 Restrict, 128, 128 Restrict, 192, 192 Restrict, 256,
256 Restrict, 320, 320 Restrict, 384, 384 Restrict, 512, 512 Restrict, 768, 768 Restrict, 1152,
1152 Restrict, 1472, 1472 Restrict, 1920.
LeasedLine:
Leased Line is a non-dialling 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.
Contents
Introduction
Getting started
Software upgrade
Status information
System settings
Appendices
System settings
