You are here: CSP Developer’s Guide: Common Channel Signaling > 7 SS7 PPL Information > SCCP SCLC (0x0065)
Purpose
This section includes PPL Config Bytes, all PPL Events, and Timer information for the PPL Component SCCP SCLC.
SCCP SCLC Configuration Bytes
|
Byte |
Description |
Value |
|---|---|---|
|
0x01 |
SCCP Message Format |
0x00- International (default for ITU) 0x01=National (default for ANSI) 0x02=China Spec (same as ITU except the point code is 24 bits |
|
0x02 |
UDTS Message Priority (ANSI Only) |
0x02 |
|
0x03 |
N-Unidata * |
0x00 - N-Unidata as UDT (Default) |
|
0x16-0x19 |
Used to store the X value. |
150 (default) |
|
0x20-0x1D |
Used to store the Y value. |
200 (default) |
* The SCCP user sends SCCP N_UNITDATA to request sending data to a remote SCCP mode. The SCCP then packs the information in N_UNITDATA into an SCCP message and sends the message. The format of the message could be UDT or XUDT.
The XUDT message can be used with GTT to validate the hop counter to detect possible traffic loops. The maximum hop counter is set to 15. We recommend that if you use GTT and if the network supports XUDT, then you should set this SCLC configuration byte 3 to 0x01 to use XUDT message.
This configuration byte only applies to the messages without segmentation. If segmentation is needed, the SCCP will automatically pack and send the XUDT with the segmentation optional parameter.
SCCP SCLC PPL Event Indications
|
Event ID |
Event |
|---|---|
|
0x0A |
Maximum reassembly processes are exceeded. |
SCCP SCLC PPL Timers
|
Timer ID |
Timer |
Default Value (10 ms) |
|---|---|---|
|
0x01 |
SCCP Segmentation reassembly timer: Ty Unit is 100 ms. |
15000 |