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Why SCCP and MTP3 both are considered as network layer?

+1 vote
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Why SCCP and MTP3 both are considered as network layer?
posted Jan 19, 2015 by anonymous

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2 Answers

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Best answer

Both SCCP and MTP3 does the routing. MTP does the point code base routing where as SCCP does PC-SSN or GT based routing. So in short both the layers are doing the routing hence both are considered as network layer.

answer Jan 19, 2015 by Salil Agrawal
0 votes

On behalf of Bart -
I find it a very strange question to ask.. No one would ask why IPv6 and IPv6 are both considered a network layer. This is why they were made for.

I believe the question should be what is the difference between SCCP and MTP3. So the SCCP was developed with MTP3, obviously after the MTP was developed. MTP was designed to carry circuit call related signaling, where with the SCCP it is capable to handle the noncircuit as well.

The main difference I would say is that SCCP is doing end to end routing where MTP3 is doing point to point routing. While MTP L3 can only identify and distribute messages to specific points and user parts, SCCP can route messages to specific applications that reside at signaling points.

On top of that SCCP is OSI Layer 3 compliant, in theory it can be transmitted over any OSI-compliant network.

answer Jan 19, 2015 by Salil Agrawal
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