VeEX MPA, User Manual

Page: 329 / 842

Protocol Tabs
329
Expected J2
Defines the Expected J2 Trace to be received on the
incoming SONET signal.
The J2 Trace is part of the VT Overhead (also known as
the VT trace), where the J2 byte is configured as a repeating
64-byte, 16-byte or 1-byte pattern that can be configured as
the system's default ASCII pattern, a customized user-
defined ASCII pattern, or a 1-byte hexadecimal pattern.
The following Expected J2 Trace options are available:
•
Default (64 byte) - Selects the default 64-byte ASCII
message as the expected trace pattern. The message
consists of 62 ASCII characters appended with CR
and LF characters at the end of the message.
•
User Defined (64 byte) - Selects a 64-byte user-
defined ASCII message as the expected trace pattern.
The message is entered and saved using a touch
screen keyboard. The user-defined message can be
up to 62 ASCII characters, appended with CR and LF
characters at the end of the message.
•
Default (16 byte) : Selects the default 16-byte ASCII
message as the expected trace pattern. The message
consists of 15 ASCII characters, appended with a
CRC-7 at the end of the message.
•
User Defined (16 byte) : Selects a 16-byte user-
defined ASCII message as the expected trace pattern.
The message is entered and saved using a touch
screen keyboard. The user-defined message can be
up to 15 ASCII characters, appended with a CRC-7 at
the end of the message.
•
All 01's - Selects an All Ones (0x01) hexadecimal
pattern as the expected trace pattern. The 0x01 byte
value repeats indefinitely and does not contain CRC-7.
•
All 00's - Selects an All Zeros (0x00) hexadecimal
pattern as the expected trace pattern. The 0x00 byte
value repeats indefinitely and does not contain CRC-7.
•
User Defined (1 byte) : Selects a user-defined
Hexadecimal byte value as the expected trace pattern.
The byte value is entered and saved using a touch
screen keypad (from 0x00 to 0xFF). The byte value
MPA_e_manual_D07-00-129P_RevA00