pef80902 Infineon Technologies Corporation, pef80902 Datasheet - Page 43

• Manufacturer Part Number: pef80902
• Description: T-sminto 4b3t Second Gen. Modular Isdn Nt
• Manufacturer: Infineon Technologies Corporation

2.4.3
In the state G3 (Activated) the B1, B2 and D bits are transferred transparently from the
S/T to the IOM
IOM
2.4.4
C/I commands ARL and AIL close the analog loop as close to the S-interface as possible.
ETSI refers to this loop under ’loopback 2’. ETSI requires, that B1, B2 and D channels
have the same propagation delay when being looped back.
The D-channel Echo bit is set to bin. 0 during an analog loopback (i.e. loopback 2). The
loop is transparent.
Note: After C/I-code AIL has been recognized by the S-transceiver, zeros are looped
2.4.5
The state diagram notation is given in
The information contained in the state diagrams are:
– state name
– Signal received from the line interface (INFO)
– Signal transmitted to the line interface (INFO)
– C/I code received (commands)
– C/I code transmitted (indications)
– transition criteria
The transition criteria are grouped into:
– C/I commands
– Signals received from the line interface (INFOs)
– Reset
Data Sheet
â
-2 interface.
back in the B and D-channels (DU) for four frames.
Data Transfer between IOM
Loopback 2
State Machine
â
-2 interface and vice versa. In all other states ’1’s are transmitted to the
Figure
35
â
-2 and S
11.
0
Functional Description
PEF 80902
2001-11-12