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Setting the Interfaces
Setting PDH/DSn Transmit Interface (option 012)
7 Choose the required PAYLOAD TYPE.
If
STRUCTURED
If
STRUCTURED
Transmit Structured Payload/Test Signal" page 70.
If you have chosen 2 Mb/s, DS1 or DS3 as the PDH/DSn signal rate, the Framed
choice is expanded to provide a menu of framing types.
At 2 Mb/s if you select PCM30 or PCM30CRC framing a field is displayed
enabling 2M CAS ABCD bits to be set. See "Setting up Signaling Bits" page 67
Choose the PATTERN type and the PRBS POLARITY.
Additional Patterns at DS1
8 If you select a DS1 SIGNAL, two 8-bit patterns and a 55 Octet pattern are added
to the list of available patterns. The 8-bit patterns are as follows:
Note 1: F indicates the position of the framing bit with respect to the 8-bit pattern
when the framed data is generated
Note 2: Both 8-bit patterns and the 55 Octet pattern can only be selected as a
payload for the whole DS1, i.e. they can not be selected as a pattern for an
individual 64 kb/s channel.
Note 3: Bit errors can be added to both 8-Bit and 55 Octet test patterns as with the
other available test patterns.
The 55 Octet pattern uses the Daly pattern as per ANSI T1.403
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is required
must be chosen .
FRAMED
is chosen the PDH test signal must be set up. See "Setting
Table 1
8-Bit Patterns
Type
Pattern
1-in-8
F01000000
2-in-8
F01100000
27
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