Release (ISUP)


Release (ISUP)

Introduction to ISUP Release :

Release code is usually used to identified and debug any events occurring in ISUP signaling. Every event in ISUP signaling generates release code number. Even for a normal ISUP call a release code is generated.There are lot of applications developed based on the release code from ISUP signaling. Similarly Telecom operators traces for Release code to debug any call failures.So the release code plays very important role in Telecom signaling.

Following are the List of releases codes used

Number in Release Cause
# Unallocated (unassigned) number
# No route to specific transit network
# No route to destination
# Send special info tone
# Misdialed trunk prefix
# Channel unacceptable
# Call awarded and being delivered in established channel
# Preemption
# Preemption - circuit reserved for reuse
# 10
# 11
# 12
# 13
# 14
# 15
# Normal call clearing
# User busy
# No user responding
# No answer from user (user alerted)
# Subscriber absent
# Call rejected
# Number changed
# 23
# 24
# Exchange routing error
# Non-selected user clearing
# Destination out of order
# Invalid number format
# Facility rejected
# Response to STATUS ENQUIRY
# Normal, unspecified
# 32
# 33
# No circuit/channel available
# 35
# 36
# 37
# Network out of order
# Permanent frame mode connection out of service
# Permanent frame mode connection operational
# Temporary failure
# Switching equipment congestion
# Access information discarded
# Requested channel/circuit not available
# 45
# Precedence call blocked
# Resources unavailable, unspecified
# 48
# Quality of service unavailable
# Requested facility not subscribed
# 51
# 52
# Outgoing calls barred within CUG
# 54
# Incoming calls barred within CUG
# 56
# Bearer capability not authorized
# Bearer capability not presently available
# 59
# 60
# 61
# Inconsistency in designed outg. access inf. and subscr. class
# Service or option not available, unspecified
# 64
# Bearer capability not implemented
# Channel type not implemented
# 67
# 68
# Requested facility not implemented
# Only restricted digital bearer cap. is available
# 71
# 72
# 73
# 74
# 75
# 76
# 77
# 78
# Service or option not implemented, unspecified
# 80
# Invalid call reference value
# Identified channel does not exist
# A suspended call exists, but this call identity does not
# Call identity in use
# No call suspended
# Call having the requested call identity has been cleared
# User not member of CUG
# Incompatible destination
# 89
# Non-existing CUG
# Invalid transit network selection
# 92
# 93
# 94
# Invalid message, unspecified
# Mandatory information element is missing
# Message type non-existing or not implemented
# Message incompatible with call state or mesg type non-existent or not implemented
# Information element non-existent or not implemented
# Invalid information element contents
# Message not compatible with call state
# Recovery on timer expiry
# Parameter non-existent or not implemented - passed on
# 104
# 105
# 106
# 107
# 108
# 109
# Message with unrecognized parameter discarded
# Protocol error, unspecified
# 112
# 113
# 114
# 115
# 116
# 117
# 118
# 119
# 120
# 121
# 122
# 123
# 124
# 125
# 126
# Interworking, unspecified

Release only with number doesn’t define and it is possible to use them for proprietary solution.


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • ISUP — (англ. ISDN User Part)  Прикладная Часть ISDN, часть Общеканальной системы сигнализации № 7, которая используется для установления телефонных соединений в Телефонной сети общего пользования. Она была описана в ITU T, в… …   Википедия

  • Liste der Telekommunikationsstandards — Liste von Standards und Richtlinien aus der Telekommunikation. Inhaltsverzeichnis 1 ETSI 1.1 Nomenklatur 1.1.1 derzeit gültige Nomenklatur 1.1.2 vorherige Nomenklatur …   Deutsch Wikipedia

  • ISDN User Part — The ISDN User Part or ISUP is part of the Signaling System #7 which is used to set up telephone calls in Public Switched Telephone Networks. It is specified by the ITU T as part of the Q.76x series, [ [http://www.itu.int/rec/T REC Q/en/ ITU T Q… …   Wikipedia

  • IP Multimedia Subsystem — The IP Multimedia Subsystem or IP Multimedia Core Network Subsystem (IMS) is an architectural framework for delivering Internet Protocol (IP) multimedia services. It was originally designed by the wireless standards body 3rd Generation… …   Wikipedia

  • Signalling System No. 7 — SS7 protocol suite OSI layer SS7 protocols Application INAP, MAP, IS 41... TCAP, CAP, ISUP, ... Network MTP Level 3 + SCCP Data link MTP Level 2 …   Wikipedia

  • Signaling System 7 — Signaling System #7 (SS7) is a set of telephony signaling protocols which are used to set up most of the world s public switched telephone network telephone calls. The main purpose is to set up and tear down telephone calls. Other uses include… …   Wikipedia

  • IP Multimedia Subsystem — Das IP Multimedia Subsystem (IMS) ist eine Sammlung von Spezifikationen des 3rd Generation Partnership Project (3GPP). Ziel von IMS ist ein standardisierter Zugriff auf Dienste aus unterschiedlichen Netzwerken. IMS verwendet ein All IP Netzwerk,… …   Deutsch Wikipedia

  • Bearer Independent Call Control — The Bearer Independent Call Control (BICC) is a signaling protocol based on N ISUP that is used to support narrowband ISDN service over a broadband backbone network without interfering with interfaces to the existing network and end to end… …   Wikipedia

  • Dominique Strauss-Kahn — Managing Director of the International Monetary Fund In office 1 November 2007 – 18 May 2011 Deputy …   Wikipedia

  • Mobile Application Part — SS7 protocol suite OSI layer SS7 protocols Application INAP, MAP, IS 41... TCAP, CAP, ISUP, ... Network MTP Level 3 + SCCP Data link MTP Level 2 …   Wikipedia