ADTRAN MX2820 System Manual page 424

MX2820 System Manual
7. From the VT/Port Provisioning menu, select
From this screen, select the desired Port and press
Options for a T1/E1 line are as follows:
• 1 - Disables T1/E1 lines
• 2 - Enables T1/E1 lines
• 3 - Auto Enables T1/E1 lines
When the Auto Enables T1/E1 lines option is selected, the STS-1 MUX unit automatically
detects when a T1/E1 is connected and enables the T1/E1 line.
Multiple ports can also be provisioned using the menu item at the bottom of the screen.
8. From the T1/E1 Provisioning menu, select
This parameter sets the line code for each individual T1/E1 interface to match the
connected device. Options for a T1/E1 line are as follows:
• 1 - AMI
• 2 - B8ZS
• 2 - HDB3 (for an E1 line)
9. From the T1/E1 Provisioning menu, select
This parameter sets the line length (line build out) for each T1 interface according to the
distance from the MX2820 system to the DTE device. The E1 line length is not selectable
and remains at 0-6 dB loss. Options for a T1 line length are as follows:
• 1 - Sets line length from 0 to 133 feet
• 2 - Sets line length from 133 to 266 feet
• 3 - Sets line length from 226 to 399 feet
• 4 - Sets line length from 399 to 533 feet
• 5 - Sets line length from 533 to 655 feet
10. From the T1/E1 Provisioning menu, select
From this screen, select the desired Port and press
This parameter determines which T1 line responds to CSU or NIU loopback requests
coming from the network. Set to CSU or NIU to allow the T1 line to respond to either a
CSU or NIU request. Set to Disable to permit the T1 line to ignore the loopback request.
This option is not available in E1 mode. Values for the T1 line are as follows:
• 1 - Disabled. T1 line ignores loopback requests
• 2 - CSU. T1 responds to CSU loopback requests
• 3 - NIU. T1 line responds to NIU loopback requests
11. From the T1/E1 Provisioning menu, select
This parameter determines which circuit is allowed to initiate a protection switch if a
failure in the circuitry for a channel is detected. If a T1/E1 line is set to Disabled, then the
failure of the circuitry for that one channel does not cause a protection switch. If a T1/E1
7-166
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T1/E1 S
TATE
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E
NTER
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T1/E1 L C
INE ODING
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T1/E1 L L
INE ENGTH
T1/E1 L D
OOPBACK ETECTION
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E
NTER
T1/E1 C P
IRCUIT ROTECTION
.
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