Difference between MTP3 and MTP3B

1. MTP3 :
This Message Transfer Part (MTP3) is an Part of the Signaling System And it is used for Communication in Public Switching (Communication)Telephone Networks

• Message Transfer Part Level 3 (MTP3) is an that Resides at the OSI Model At Layer 3
• This MTP3 Protocol Performs the SS7 protocol’s Networks functions
• MTP3 is an SS7 Level Protocol
• The MTP3 is For Signalling Data Link functional level for the narrowband signalling(Communication ) Networking links And For to Broadband The Signalling links
• MTP3 Protocol is responsible for the Reliable , Unduplicated and  for the in-sequence Transport of SS7 Level Protocol Networking Messages Between to its Communication Partners
• MTP3 is formally defined primarily in ITU-T Recommendations for it
• These ITU-T tests are used to validate the correct implementation of the MTP3 protocol
• MTP3 Uses in 3G cellular networks

2. MTP3B :
The Message Transfer Part level 3 (MTP3B) Broadband provides the Message Routing discrimination and the distribution ( for peer to peer link )

• MTP3B is used for Broadband signaling
• It also provides the Signalling link management and load sharing
• Using This MTP3B Protocol Can Achieve The changeover between links within one link Set
• This MTP3B protocol is a broadband ISDN based protocol used typically in the System Modes Like ATM ( Asynchronous Transfer Mode )
• MTP3B Protocol is Having Three Sub Layer SSCF, SSCOP, and AAL5
• MTP3B Uses in Radio Access

Difference between MTP3 and MTP3B :

Pt.N.	MTP3	MTP3B
1	MTP3 – Message Transfer Part Level 3	MTP3B- Message Transfer Part Level 3 Broadband
2	MTP3 is used for Narrowband signaling	MTP3b is used for Broadband signaling
3	MTP3 is the traditional TDM	MPT3B is Designed for supporting ATM features
4	Based On transmission system	Based On the Basis of MTP3
5	The PC SSN Pairs Uses MTP3 To Route The Messages	MTP3B Also provides message routing, discrimination And distribution
6	MTP3 – (B-ISDN) ATM Adaptation Layer	MTP3B – SS7 (M3UA) – User Adaptation Layer
7	MTP3 Uses in 3G cellular networks	MTP3B Uses in Radio Access
8	MTP3 Protocols Enhances The Functions Provided by its Lower Layers	MTP3B Protocol is Having Three Sub Layer SSCF, SSCOP, and AAL5
9	EXAMPLE- RFC 3332	EXAMPLE- RFC 3331