PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 177

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

3.3.2.2
Table 14
Commands and Indications in LT-S Mode
Command (downstream)
Deactivate request
Send continuous zeros
Send single zeros
Activate request downstream
Activate request loop
Deactivate indication
downstream
Indication (upstream)
Lost signal level
Lost framing upstream
Activate request upstream
Activate indication upstream
Deactivate indication upstream
(x) unconditional commands
Semiconductor Group
Layer-1 Command/Indication Codes and State Diagrams in LT-S Mode
Abbr. Code
DR
SCZ
SSZ
ARD
ARL
DID
Abbr. Code
LSL
RSYU 0100
ARU
AIU
DIU
0000
0001
0010
1000
1111
0001
1000
1010
1100
1111
177
Remarks
(x)
Transmission of pseudo-ternary pulses at
96 kHz frequency (x)
Transmission of pseudo-ternary pulses at
2 kHz frequency (x)
Activation request for loop 2
Deactivation acknowledgement, quiescent
state
Remarks
No receive signal
Receiver is not synchronous
Info 1 received
Synchronous receiver
Timer (32 ms) expired or info 0 received
(during 16 ms) after deactivation request
Operational Description