PTC131 Telecom ISDN User - Network Interface, Layer 1: Basic Rate Interface(.pdf)

PTC132 Telecom ISDN User - Network Interface, Layer 1: Primary Rate Interface(.pdf)

TNA133 Telecom ISDN User - Network Interface, Layer 2(.pdf)

TNA134 Telecom ISDN User - Network Interface, Layer 3 Table of Contents(.pdf) Part A: General Matters(.pdf) Part B:Basic Call Control Procedures Basic Call Control Procedures (sections 1-2)(.pdf) Basic Call Control Procedures (section 3)(.pdf) Basic Call Control Procedures (section 4)(.pdf) Basic Call Control Procedures (section 5)(.pdf) Basic Call Control Procedures (sections 6-8)(.pdf) Basic Call Control Procedures (section 9)(.pdf) Basic Call Control Procedures (Annex)(.pdf) Basic Call Control Procedures (Appendix)(.pdf) Part C:Generic Procedures for the Control of ISDN Supplementary Services(.pdf) Part D:Procedures for Specific Supplementary Services(.pdf)

TNA136 TNA 136 Primary Rate Lite (.pdf)

TNA137 TNA 137 Basic Rate Access - Ericsson AXE(.pdf)

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