PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 99

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

MODE:DIM2-0 to 001 or 011.
Selection of the Priority Class
The priority class (priority 8 or priority 10) is selected by transferring the appropriate activation
command via the Command/Indicate (C/I) channel of the IOM interface to the layer-1
controller. If the activation of the S interface is initiated by a TE, the priority class is selected
implicitly by the choice of the activation command. If the S interface is activated from the NT,
an activation command selecting the desired priority class should be programmed at the TE
on reception of the activation indication (AI8). In the activated state, the priority class may be
changed whenever required simply by programming the respective activation request
command (AR8 or AR10). The following table summarizes the C/I codes used for setting the
priority classes:
Table 6
Priority Commands/Indications for TE/LT-T Mode
Command (upstream)
Activate request, set priority 8
Activate request, set priority 10
Indication (downstream)
Activate indication with priority
class 8
Activate indication with priority
class 10
Semiconductor Group
Abbr.
AR8
AR10
Abbr.
AI8
AI10
Code
1000
1001
Code
1100
1101
99
Remarks
Activation command: Set D-channel
priority to 8
Activation command: Set D-channel
priority to 10
Remarks
Info 4 received: D-channel priority is 8
or 9
Info 4 received: D-channel priority is
10 or 11
Functional Description