<clockSource>

: internal | external | backplane

The value of this object specifies where the line clock comes from. Choose internal if you want the on-board oscillator to be used as the clock source. Choose external if you want to receive the clock source remotely, such as from a PBX. Choose backplane if you want to use the Passport 4460 unit's master clock as the clock source.

<e1CRC4Status>

: disable | enable

Choose enable if you want the CRC-4 Cyclic Redundancy Check feature enabled on the T1 line. When enabled, the E1 access module generates and monitors for the CRC algorithm carried on bit 1 of Time Slot 0 of an E1 frame.

<e1IdleCode>

: INTEGER (0..255)

The value of this object specifies the code to be filled in the E1 line when idle.

<e1LineCode>

: ami | hdb3

Selects either AMI or HDB3 line code.

• ami indicates that HDB3 suppression is disabled. When AMI is selected, you must ensure that the Data Terminal Equipment is generating at least one in every four bits.
• hdb3 (High Density Bipolar 3): an ITU-TSS-recommended coding method which limits the maximum number of consecutive zeros to three.

<signalProtocol>

: cas | ccs

The value of this object specifies the line to be used as CAS or Common Channel Signaling (CCS). CCS is an application that allows

<t1BuildOut>

:lessThan133Feet | lessThan266Feet | lessThan399Feet | lessThan533Feet | lessThan655Feet | neg7andHalfdB | neg15dB | neg22dB

Specifies cable length attached to the line on the local end of the connection.

<t1FrameFormat>

: superFrame(D4) | extendedSuperFrame(ESF)

Sets the profile for either superframe (D4) or extended superframe (ESF). Superframe consists of 12 frames and extended superframe consists of 24 frames. Choose the frame format that is appropriate for your interface.

<t1IdleCode>

: INTEGER (0..255)

The value of this object specifies the code to be filled in the T1 line when idle.

<t1LineCode>

: ami | b8zs

Sets either AMI or B8ZS zero suppression. AMI disables B8ZS suppression; however, a bit density requirement is created which can be satisfied by assuring that the DTE is generating at least one 1 in every byte. Voice is not affected as PCM code does not allow bytes without a 1.

<t1LoopbackStatus>

: disable | enable

Used to enable T1 network-invoked loopback tests. When enabled, the T1 Access Module recognizes and responds to network-invoked loopback commands. When disabled, the T1 Access Module will not respond to network-invoked loopback commands.