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Bug #5579

open

Respect size limit of 130 data bytes in SCCP CR

Added by laforge 16 days ago. Updated 15 days ago.

Status:
New
Priority:
Normal
Assignee:
-
Target version:
-
Start date:
06/16/2022
Due date:
% Done:

0%

Spec Reference:

Description

ITU-T Q.713 states the DATA section of CR (and subsequent CREF or CC responses) is 130 bytes. This is different from the general 256 byte limit of DT1 or other messages. The same 130 byte limit applies to RLSD/RLC.

We should handle this in a generic way inside libosmo-sigtran so that applications trying to send > 130 byte payload in N-CONNECT.req will simply result in an empty CR followed by a delayed DT1 being sent. This way the applications don't have to care.

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