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NetworkInterface.T1E1[x].LineCode
Syntax
NetworkInterface.T1E1[
x
].LineCode
=
code
x
=
0
..
3
(0-based trunk number or range of trunk numbers)
Access
Read/Write
Type
String
Default
For T1 trunks,
NetworkInterface.T1E1[x].LineCode
defaults to
AMI_ZCS
if
NetworkInterface.T1E1[x].SignalingType
is set to
CAS
. Otherwise, it defaults to
B8ZS
.
For E1 trunks,
NetworkInterface.T1E1[x].LineCode
defaults to
HDB3
.
Allowed Values
AMI | B8ZS | HDB3 | AMI_ZCS | AMI_BELL | AMI_DDS | AMI_GTE
Example
NetworkInterface.T1E1[0..3].LineCodeCode = AMI
Description
Specifies the ones density maintenance method used on the trunk line to maintain a clear channel transmission.
For more information about ones density, refer to
Appendix C
.
The following formats are valid for T1 trunks:
Format
Definition
AMI
Alternate mark inversion - standard line coding with no zero code suppression
B8ZS
Binary 8-zero suppression (uses patterns of bipolar violations to replace zero data bytes; especially useful for clear channel transmission.
AMI_ZCS
AMI
with jammed bit 7 zero code suppression. For T1 trunks,
NetworkInterface.T1E1[x].LineCode
defaults to
AMI_ZCS
if
NetworkInterface.T1E1[x].SignalingType
is set to
CAS
. Otherwise, it defaults to
B8ZS
.
AMI_BELL
Same as
AMI_ZCS
.
AMI_DDS
AMI
with zero data byte replaced with 10011000.
AMI_GTE
AMI
with jammed bit 8 zero code suppression, except in signaling frames when jammed bit 7 is used if the signaling bit is zero.
The following formats are valid for E1 trunks:
Format
Definition
AMI
Alternate mark inversion - standard line coding with no zero code suppression
HDB3
High-density bipolar 3 code - uses patterns of bipolar violations to replace sequences of 4 zero data bits in order to maintain 1's density on clear channel transmission
See Also
NetworkInterface.T1E1[x].ConfigFile
,
NetworkInterface.T1E1[x].CRCMFMode
,
NetworkInterface.T1E1[x].D_Channel
,
NetworkInterface.T1E1[x].FrameType
,
NetworkInterface.T1E1[x].Impedance
,
NetworkInterface.T1E1[x].Length
,
NetworkInterface.T1E1[x].SignalingType
,
NetworkInterface.T1E1[x].Type
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Copyright © 2001, Natural MicroSystems, Inc. All rights reserved.
(Page 86 of 111 in this chapter) Version