This is our old Q&A Site. Please post any new questions and answers at

Hi i have taken a SMS trace at STP side. I have seen 2 invoke forwardSM Packet and and check the OPCODE for both one of them have opcode 44 which is mt-forwardSM and one contain OPCODE 46 -mo-forwardSM . i want to know how this is possible in single invoke forwardSM packet.

asked 18 Jan '14, 22:40

Gaurav's gravatar image

accept rate: 0%

It's definitely possible to see both in a single IP packet if both messages would be being sent to the same next-hop point code by the STP. Most, and virtually every implementation of SS7 over IP will have multiple SS7 messages, even for multiple applications (INAP, ISUP, MAP, etc.), aggregated into one IP packet if it's between the same two point codes (multi-streaming).

permanent link

answered 19 Jan '14, 20:18

Quadratic's gravatar image

accept rate: 13%

edited 19 Jan '14, 20:24

Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here



Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text]( "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:


question asked: 18 Jan '14, 22:40

question was seen: 5,242 times

last updated: 19 Jan '14, 20:24

p​o​w​e​r​e​d by O​S​Q​A