Segments Of Concatenated SMS Contain Unexpected Bytes In UDH (Doc ID 2715885.1)

Last updated on OCTOBER 26, 2020

Applies to:

Symptoms

In Oracle Communications Network Charging and Control (NCC) version 6.0.1, Messaging Manager (MM) is a messaging system for mobile networks. It acts as a Virtual Message Point (VMP) for a variety of different messaging traffic.

There is an issue when the message that needs to be delivered is a concatenated Short Message Service (SMS), consisting of several segments. In the SMS message, the User Data Header (UDH) is a binary structure which may be present at the start.

UDH populated in segments normally contains 3 extra bytes  - CPI (Command Packet Identifier) - IEIb. This is expected to be delivered in the first segment only, but in our case it is also present in subsequent segments what is not in line with the specifications.

Changes

Cause

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