Information technology. Telecommunications and information exchange between systems. Private integrated services network. Inter-exchange signalling protocol. Recall supplementary service
€281.00
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Specification, functional model and information flows. Call interception additional network feature
€329.00
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Inter-exchange signalling protocol. Call interception additional network feature
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Specification, functional model and information flows. Transit counter additional network feature
€201.00
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Specification, functional model and information flows. Advice of charge supplementary services
€390.00
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Inter-exchange signalling protocol. Advice of charge supplementary services
€370.00
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Specification, functional model and information flows. Recall supplementary service
€172.00
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Inter-exchange signalling protocol. Transit counter additional network feature
Mains communications systems. Protocol and data integrity and interfaces
Information technology. Telecommunications and information exchange between systems. Intermediate system to Intermediate system intra-domain routeing information exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network service (ISO 8473)
€421.00
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Functional requirements for static circuit-mode inter-PINX connections
Information technology. Telecommunications and information exchange between systems. Private integrated services network. Inter-exchange signalling protocol. Common information additional network feature
Essential requirements for a handset telephony facility provided by terminal equipment intended for direct connection to an analogue interface of the public switched telephone network
Alarm systems. transmission systems and equipment Requirements for with voice communicators using the public switched telephone network
€99.00
Alarm systems. transmission systems and equipment Requirements for used in with digital communicators using the public switched telephone network
