Avaya Configuring Line Services Bedienungsanleitung Seite 134

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Configuring MCE1 and MCT1 Interfaces
114078 Rev. A 6-9
Setting the MCT1 Line Type
Select one of the following line types (framing formats) for your T1 equipment:
ESF -- Transmits superframes, each consisting of 24 individual SF/D4 frames.
Provides enhanced signaling and synchronization.
SF/D4 -- Transmits superframes, each consiting of 12 individual frames.
Unframed T1 -- Available only when the BERT Mode parameter is enabled.
See “Enabling or Disabling BERT Mode (QMCT1 only)” later in this chapter.
You can set the Line Type for this MCT1 interface.
For ESF lines, you can also set the Facility Data Link (FDL) mode.
Setting the FDL Mode for ESF Line Types
The MCT1 interface selects a Facility Data Link (FDL) mode only when the line
is configured with an ESF line type. You can select one of the following ESF line
types:
ANSI 403 -- the default
ANSI 403 mode, conforms to the 1989 ANSI T1.403 specification
(Carrier-to-Customer Installation DS1 Metallic Interface).
AT&T 54016
AT&T 54016 conforms to the 1989 AT&T specification (Requirements for
Interfacing Digital Terminal Equipment to Services Employing the Extended
Superframe Format).
Setting the Line Coding Method
By default, the MCT1 interface uses bipolar with 8-zero substition (B8ZS) line
coding. B8ZS line coding replaces a block of eight consecutive binary 0s with an
8-bit B8ZS code containing bipolar violations in the fourth and seventh bit
positions of the substituted code. In the receive direction, the B8ZS code is
detected and replaced with eight consecutive binary 0s.
Site Manager: Line Type parameter: page A-49
Site Manager: FDL Configuration parameter: page A-51
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