ADTRAN DE-4E Spécifications télécharger pdf (Page 3)

3Section 61245207L2-5, Issue 261245207L2-5C

Switch Function Description

SW1-1 ...... Code Select ............................................ SW1-1 On selects B8ZS line code. SW1-1 Off selects AMI.

Off .......... AMI

On .......... B8ZS

SW1-2 ...... Framing .................................................. SW1-2 Off selects SF. SW1-2 On selects ESF.

Off .......... SF

On .......... ESF

SW1-3 ...... Channel Select ....................................... Selects between Alternating and Contiguous DS0 channels.

Off .......... Alternate

On .......... Contiguous

SW1-4 ...... Latching Loopback ................................ Used to enable or disable latching loopbacks.

Off .......... Disabled

On .......... Enabled

SW1-5 ...... Loopback Timeout ................................. Used to enable or disable automatic loopback timeout.

Off .......... Automatic loopback timeout is disabled

On .......... Loopback timeout is enabled and set for 20 minutes.

SW1-6 ...... Dumb/Smart Channel Bank Enable ...... Used to select dumb or smart channel bank operation

Off .......... Unit is provisioned for an NT1 bank with a Smart Transmit/Receive

Unit (STRU) installed. Two-state signaling available (smart mode)

On .......... Unit is provisioned for an NT1 bank with a Transmit/Receive

Unit (TRU) installed. Four-state signaling available (dumb mode)

SW1-8 ...... Protected Loopback ............................... Used to enable or disable protective loopback.

Off .......... Disabled.

On .......... Enabled.

Table 2. SW1 Option Settings

(Default settings are indicated in bold typeface.)

1 2 3 4 5 6 7 8 ... 18 19

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ADTRAN DE-4E Spécifications Page 3