X.75 Internetworking protocol

1. X.75 Internetworking
Protocol
By: Ms. Pradnya Saval
Asst. Prof. TCET
Mumbai

2. X.75 Internetworking Protocol

3. X.75 Internetworking Protocol (Cont..)
• ITU-T Recommendation X.75 defines the protocol structure and procedures
for internetworking multiple X.25 packet switching private data networks
(PSPDNs).
• X.75 can be used to:
• share network resources and data across the international or mutiprovider area.
• connect larger backbone packet switches to one another.
• Translate address in conjunction with the X.121 address protocol standard.
• Multilink procedures to support multiple links between signalling terminal exchange (STE).

4. X.75 Internetworking Protocol (Cont..)
• The figure shows DTEs from 2 separate X.25 networks located in US and
UK communicating via X.75 protocol.
• The X.75 link is transparent to the end user.
• The figure is an example of X.75 being used as an international packet
switching service.