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Difference Between SCCP and MTP3

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  • Last Updated : 31 Jan, 2022
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Signaling Connection Control Part (SCCP) is the terminal control for the use of Voice (Communication) Channel over IP i.e. (VoIP) And The Signaling Connection Control Part (SCCP) is relays in a Network Layer protocol that provides the functions like the extended routing, connection-orientation and also flow control, segmentation and error correction facilities in the SS7(SS7-Signaling System 7) Telecommunications Networks

  • The Signaling Connection Control Part (SCCP) is a network layer protocol that provides features of extended routing.
  • SCCP also provides Flow control, segmentation, connection-orientation, and error detection and error correction facilities in Signaling System 7 i.e.(SS7) telecommunications networks.
  • This SCCP protocol relies on the services i.e. working on MTP for basic routing and for error detection.
  • This SCCP is an interface or Modern Controller between the cisco call manager and the cisco VOIP phones i.e.(VoIP).
  • The SCCP is from the transport layer for Tcap based applications and this SCCP protocol is placed over the MTP3 layer on the module.
  • This SCCP protocol can route the messages to specific applications that reside at signaling points within it.
  • SCCP is integrated with the MTP3 protocol after the MTP2 was created and developed, it is working along with the SCCP it is utilized to handle the non-circuit as well it exactly.
  • SCCP is working on end-to-end routing, not on the point-to-point routing.
  • The TCP port 2000 is reserved for the SCCP protocol i.e.(Skinny) protocol in it.

The Message Transfer Part Level 3 (MTP3B) broadband provides the message routing discrimination and the distribution (for peer to peer links)

  • MTP3B is used for broadband signaling.
  • It also provides signaling 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 SCCP and MTP3




1. SCCP- Signaling Connection Control Part MTP3 – Message Transfer Part Level 3
2. SCCP is used for flow control and error correction facilities in the SS7. MTP3 is used for narrowband signaling.
3. SCCP is not a traditional TDM. MTP3 is the traditional TDM
4. SCCP is an end-to-end routing. MTP3 is a point-to-point routing.
5. SCCP uses the services of MTP for basic routing and segmentation and the connection-orientation. The PC SSN pairs uses MTP3 to route the messages.
6. The SCCP can route the messages to specific applications that reside at the signaling points for it. The MTP3 can only identify and distribute messages to specific points and the User parts.
7. SCCP supports GTT-(Global Title Translation). MTP3 doesn’t support GTT-(Global Title Translation).
8. SCCP is on the network layer. MTP3 – (B-ISDN) ATM adaptation layer.
9. SCCP is used in  SS7 telecommunication networks. MTP3 is used in 3G cellular networks.
10. The SCCP is a Tcap based application. Based on the transmission system.
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