ADTRAN Telephone Total Access User Manual

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Section 4 User Interface Guide Total Access 600 Series System Manual
110 © 2004 ADTRAN, Inc. 61200624L1-1B
L2 PROTOCOL (T1 ATM–T1–ATM) > STATUS > PVC STATUS > PROTOCOL STATUS
Use these menus to view the AAL2 S
TATS
, P
OTS
S
TATS
, and to C
LEAR
S
TATS
for the PVC Protocol.
CRC E
RRORS
Number of AAL5 CRC Errors.
R
EASSEMBLY
T
IMEOUTS
Number of AAL5 Reassembly Timeouts.
T
OO
L
ONG
F
RAMES
Number of AAL5 Too Long Frames.
C
LEAR
C
OUNTS
Clears all recorded statistics and returns all counters to 0.
AAL2 S
TATS
ATM Adaptation Layer 2 statistics is used to provide error information on voice traffic. This menu
displays
R
X
AAL2 HEC E
RRORS
,
R
X
AAL2 S
EQ
E
RRORS
,
R
X
V
OICE
S
EQ
E
RRORS
,
R
X
V
OICE
B
AD
CID
,
R
X
V
OICE
B
AD
UUI, R
X
V
OICE
EOC C
ELLS
, and P
EAK
C
ELL
R
ATE
.
R
X
AAL2 HEC E
RRORS
A CRC code (used for data integrity checks) is contained in the last byte of an AAL2 header. A
received HEC error could result in dropped packets and poor voice quality.
R
X
AAL2 S
EQ
E
RRORS
A single bit of the AAL2 header is used as a sequence bit and toggles from 1 to 0 with each
successive transmitted cell. If two cells are received back to back with the same sequence bit, a
sequence error is denoted.
R
X
V
OICE
S
EQ
E
RRORS
Indicates that the Total Access 600 Series received voice packets that were out of sequence
according to the voice sequencing bits. The Total Access 600 Series does not drop these packets,
but the error is logged because invalid sequence numbers were received.
R
X
V
OICE
B
AD
CID
Indicates that the channel identifier (used for identifying voice calls in the ATM cell) was not
valid.
R
X
V
OICE
B
AD
UUI
The User Indication designates the signaling bit pattern for PCM/ADPCM and identifies the
packet as Type 1 (voice) or Type 3 (signaling). This error indicates the Total Access 600 Series
received an incorrectly formatted UUI.
R
X
V
OICE
EOC C
ELLS
Indicates an EOC cell was received with a voice designation.

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