T1/E1 port configuration task list
62
OnSite 2800 Series User Manual
5 • T1/E1 port configuration
Configuring T1/E1 application mode
The T1/E1 port can be configured to work in either short-haul or in long-haul mode.
Short-haul
is the default
application and should be used for transmission distances up to
180m/600ft
. For transmission distances up to
1800m/6000ft
, select the
long-haul
application.
Mode:
port e1t1 <slot> <port>
Configuring T1/E1 LOS threshold
This command takes effect only if the T1/E1 port is configured for
long-haul
applications. It specifies the sen-
sitivity for
Loss Of Signal threshold
. A signal suffers more attenuation over long distances than over short dis-
tances. Therefore the LOS-Threshold must be set higher for longer transmission distances. This command has
a default value of -46dB what should be enough for distances up to 1600 m/5250 ft.
Mode:
port e1t1 <slot> <port>
Configuring T1/E1 encapsulation
Only ‘hdlc’ encapsulation is available on a T1/E1 port. Once encapsulation is configured as ‘
hdlc
,’ the ‘hdlc’
submode can be entered for selecting the next encapsulation type like
ppp
or framerelay. Depending on the
port-type, the encapsulation ‘hdlc’ selects automatically all timeslots of the port for data transmission (
1-31
for
e1 and
1-24
for t1).
It is also possible to use the port in
channelized
mode. In “channelized” mode, the user selects less than the
total number of timeslots for the channel (1-31 for E1, 1 – 24 for T1) is able to configure single or multiple
timeslots for data transmission. To use this feature the encapsulation must be configured for ‘channelized;’
afterwards the
channel-group
command is used to create the channel-group. In the channel-group configura-
tion mode, the user selects the specific timeslots, and the encapsulation ‘hdlc’ will be available again. Once the
encapsulation of a T1/E1 port is set to ‘channelized’ it is not possible to change the port-type again or to use
the ‘unframed’ framing format.
Mode:
port e1t1 <slot> <port>
Create a Channel-Group
If the desired encapsulated channel uses only selected time slots (not the entire T1/E1), then it is necessary to
set up a channel-group. To create a channel-group, set the T1/E1 port’s encapsulation to
channelized
. (See sec-
Step
Command
Purpose
1
[
name
] (prt-e1t1)[
slot/port
]#application
{long-haul | short-haul}
Specifies the e1/t1 application mode
Default:
short-haul
Step
Command
Purpose
1
[
name
] (prt-e1t1)[
slot/port
]#los-thresh-
old {-4dB | -6dB | -8dB … -46dB | -
48dB}
Specifies Loss Of Signal Threshold
Default:
-46dB
Step
Command
Purpose
1
[
name
] (prt-e1t1)[
slot/port
]#[no] encapsu-
lation {channelized | hdlc}
Specifies the encapsulation type of the T1/E1 port.
Default:
no encapsulation
Содержание OnSite 2800 Series
Страница 112: ...112 Chapter 9 LEDs status and monitoring Chapter contents Status LEDs 113...
Страница 124: ...124 Appendix C Cabling Chapter contents Introduction 125 Serial console 125 Ethernet 10Base T and 100Base T 126...
Страница 132: ...132 Appendix E OnSite 2800 Series factory configuration Chapter contents Introduction 133...
Страница 134: ...134 Appendix F Installation checklist Chapter contents Introduction 135...