Appendix E E-ISUP Cause Value-to-Name Lookup

106CC_EC_TemporaryOos

107CC_EC_OperatorPriorityAccess

108CC_EC_CugAccessBarred

109CC_EC_SubscriberCallTerminate

110CC_EC_FlowControlledCongestion

111CC_EC_OutOfCatchmentArea

112CC_EC_TranslationOos

113CC_EC_PermanentIcb

114CC_EC_SubscriberMoved

115CC_EC_SubNotFoundDle

116CC_EC_AnonymousCallRejection

117CC_EC_TerminalCongestion

118CC_EC_RepeatAttempt

119CC_EC_VacentCode

120CC_EC_Prefix0DialledInError

121CC_EC_Prefix1DialledInError

122CC_EC_Prefix1NotDialled

123CC_EC_ExcessiveDigCallProceeding

124CC_EC_ProtErrThresholdExceeded

125CC_EC_OutgoingCallsBarredInCug

126CC_EC_InconOutgoingAccAndSubClass

127CC_EC_NonExistentCug

128CC_EC_MesgWithUnrecElemDiscarded

129CC_EC_PreemptionCctRes

130CC_EC_PermanentFrameModeOos

131CC_EC_PermanentFrameModeOperational

132CC_EC_BlacklistNoCli

133CC_EC_BlacklistCliLengthInvalid

134CC_EC_BlacklistCliMatched

135CC_EC_BlacklistCpcRestricted

136CC_EC_BlacklistNoaRestricted

137CC_EC_BlacklistBNumberMatched

138CC_EC_WhitelistCliNotMatched

139CC_EC_PortedNumber

140CC_EC_RedirectionToNewDest

141CC_EC_CotFailure

142CC_EC_MisroutedCallPortedNumber

143CC_EC_InvalidCallRef

144CC_EC_Unknown

 

 

Cisco H.323 Signaling Interface User Guide

 

 

 

 

 

 

 

OL-4806-01 Rev. A14

 

 

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H.323 specifications

Cisco Systems H.323 is a set of standards designed for transmitting audio, video, and data over packet-switched networks. It is a critical technology that enables real-time communication and has become integral to the world of VoIP (Voice over Internet Protocol) and video conferencing applications. Originally developed by the ITU-T, H.323 has been widely adopted and implemented by Cisco Systems, allowing organizations to leverage reliable and scalable communication solutions.

One of the standout features of H.323 is its ability to support interoperability among varying equipment and platforms. This means that devices from different manufacturers can communicate seamlessly, which is vital in a diverse technical environment. H.323 does this by defining protocols that handle signaling, media transport, and control, ensuring that various systems can work together effectively.

Key technologies utilized within H.323 include H.225 and H.245 signaling protocols. H.225 is responsible for call setup and management, establishing communication between endpoints. In contrast, H.245 manages the negotiation of media channels, allowing devices to configure themselves based on the capabilities of each other. This adaptability is crucial for dynamic network conditions typical in VoIP applications.

Another defining characteristic of H.323 is its support for multiple types of multimedia communication, including point-to-point and multipoint calls. This flexibility supports everything from simple audio calls to complex videoconferencing setups, where many participants can share video and audio streams concurrently. Cisco enhances this capability through its hardware and software offerings, optimizing performance for conference calls.

H.323 also features robust error resilience mechanisms. This ensures that real-time data, which is typically sensitive to delays and losses, can be transmitted with minimal disruption. Moreover, it facilitates quality of service (QoS) implementation, allowing organizations to prioritize voice and video traffic over less critical data services, thereby improving the overall user experience.

In conclusion, Cisco Systems H.323 stands out as a comprehensive solution for real-time communication over packet-based networks. Its main features, including interoperability, multimedia support, and enhanced error resilience, position it as a relevant technology in both corporate and personal communication settings. As organizations continue to adopt cloud and hybrid communication models, H.323 remains a reliable backbone for ensuring connectivity and collaboration across diverse platforms.
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