Maintenance Commands
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466
Issue 5 October 2002
Frame Alignment Word (FAW) Information.
The FAW section of page 3
provides channel Frame Alignment Word information for the communication paths
labeled CHL 1 and 2. For 2B calls, both CHL 1 and 2 are used. For 1-channel
calls (112,bps, 128kbps, 168kbps, 196kbps, 224kbps, 256kbps, 280kbps,
320kbps, 336kbps, 384kbps, 768kbps, 1472kbps, 1536kbps, and 1920kbps) only
CHL 1 is used.
A-OUT
,
A-IN
,
M-FRM
,
MFA
, and
MFN
are flags with
y
or
n
.
Field descriptions
A-OUT
MCU has endpoint framing.
A-IN
Endpoint has MCU framing
M-FRM
Multichannel frame alignment of both channels in 2B is present.
MFA
Multiframe alignment word is present (required in 2B call).
MFN
Multiframe numbering is present (required in 2B call).
FAS
Frame Alignment Signal (FAS) channel number (1 or 2). This number should
match the column header.
MCUFAL
MCU Frame Alignment Loss (MCUFAL). Counts the number of times the
MCU reports lost endpoint FAW or multichannel synchronization (M-FRM) to
the endpoint. The MCU a-bit toggles when the MCU gains or loses endpoint
multichannel synchronization. This counter starts with 0x00, increments to
0xff, then wraps around to 0x01. The MCUFAL count also displays in the
Fr
Err
field on Page 2
FEFAL
Far End Frame Alignment Loss (FEFAL). Counts of the number of changes
the MCU detects in the endpoint’s a-bit (A-OUT). The endpoint a-bit toggles
when an endpoint gains or loses MCU framing. This counter starts with 0x00,
increments to 0xff, then wraps around to 0x01.