
Creating Line Pools
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Parameter: Line Type
Default: ESF
Options: ESF | SF/D4
Function: Selects either ESF or SF/D4 framing format.
ESF – Transmits superframes consisting of 24 individual SF/D4 frames
and provides enhanced signaling and synchronization
SF/D4 – Transmits superframes consisting of 12 individual frames
Instructions: Select ESF or SF/D4 based on the frame format that the associated T1
equipment requires.
MIB Object ID: 1.3.6.1.4.1.18.3.4.9.4.1.6
Parameter: Line Coding
Default: B8ZS
Options: AMI | B8ZS
Function: Selects a line coding method.
AMI line coding is bipolar: the router transmits a binary 0 as zero volts
and it transmits a binary 1 as either a positive or negative pulse, opposite
in polarity to the previous pulse. (When configured for AMI line coding,
the MCT1 Link Module remains synchronized when it receives up to 45
consecutive zeros.)
B8ZS line coding replaces a block of 8 consecutive binary zeros with an
8-bit B8ZS code containing bipolar violations in the 4th and 7th bit
positions of the substituted code. In the receive direction, the router
detects and replaces the B8ZS code with 8 consecutive binary zeros.
Instructions: Specify the line coding method.
MIB Object ID: 1.3.6.1.4.1.18.3.4.9.4.1.7
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