PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 94

• Manufacturer Part Number: PEB2085
• Description: ISDN SubscribernAccess Controller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

2.5.6
An incorporated finite state machine controls ISDN layer-1 activation/deactivation according to
CCITT (see chapter 3.4).
Loss of Synchronization / Resynchronization (TE mode)
The following section describes the behaviour of the PEB 2085/86 in respect to the CTS test
procedures for frame alignment.
Setting of the ISAC-S
The ISAC-S needs to be programmed for multiframe operation with the Q-bits set to "1".
STAR2: MULT = 0
SQXR:SQX1-4 = 1111B (xF)
2.5.6.1
This test checks if no loss of frame alignment occurs upon a receipt of one bad frame. The
pattern for the bad frame is defined as IX_96 kHz. This pattern was revised so that a code
violation is generated at the begin of the next info 4 frame.
Device
PEB 2085 V2.3
PEB 2086 V1.1
Semiconductor Group
Activation/Deactivation
FAinfA_1fr
Info 4
Info 3
Settings
none
none
Info
Info
4
3
94
Result
Pass
Pass
IX_96 kHz
Info 3
Code Violation
Functional Description
Info 4
Info
Comments
3
ITD05898