L79 计算机开放与系统互连 标准查询与下载
共找到 2503 条与 计算机开放与系统互连 相关的标准，共 167 页
This Recommendation defines a package that extends the applicability of the ITU-T H.248.1 Gateway control protocol. Specifically, the packages in Recommendation ITU-T H.248.3 define a framework for specifying capabilities associated with user interface elements, such as text display, keys, dynamically labelled keys, indicators and alphanumeric input. In addition, specific extension packages for telephone keypads and telephone function keys are defined.
Gateway control protocol: User interface elements and actions packages (Study Group 16)
- ICS
- CCS
- L79
- 发布
- 2013-03-01
- 实施
This Recommendation defines two packages that provide enhanced digit collection capabilities for [ITU-T H.248.1]. The support of these packages is optional.
Gateway control protocol: Enhanced digit collection packages and procedures (Study Group 16)
- ICS
- CCS
- L79
- 发布
- 2013-03-01
- 实施
This Recommendation defines the error codes that are used in the core ITU-T H.248.1 protocol. It lists the error code number associated with the error code name. It then provides a definition of when the error code is to be used and if the error code is defined in a package. It also provides an indication of what text may be included in the error text descriptor to allow further interpretation of the error code. Clause 4.2 provides these details. The normal actions for failed transactions and commands apply as specified in clause 8 of [ITU-T H.248.1]. Packages may define error codes not documented in this Recommendation. The IANA registry should be consulted for the complete list of error codes.
Gateway control protocol: Error code and service change reason description (Study Group 16)
- ICS
- CCS
- L79
- 发布
- 2013-03-01
- 实施
Recommendation ITU-T H.248.25 defines basic channel associated signalling (CAS) and R1 packages and supplemental CAS packages that, in association with the ITU-T H.248 Protocol, can be used to control a media gateway (MG) from an external media gateway controller (MGC). This revision adds a new read-only property containing the current CAS state of the termination, to allow the MGC to resynchronize itself in the event it loses track of this state. This revision incorporates an update to the optionality of the "Pulse off" and "Pulse On" events.
Gateway control protocol: Basic CAS packages (Study Group 16)
- ICS
- CCS
- L79
- 发布
- 2013-03-01
- 实施
Recommendation ITU-T H.248.22 describes a package to enable the media gateway controller (MGC) to indicate to the media gateway (MG) to use or not to use network resources associated with a shared risk group when setting up connections. When network connections are associated with ephemeral terminations in the MG, certain resources are used. A failure in the MG may result in the loss of certain groups of resources, whilst other groups of resources remain unaffected. The resources that share a risk of failure are called a shared risk group. A shared risk group is simply a grouping of the network resources (e.g., IP interfaces) sharing the same risk of failure. Each shared risk group could, for example, contain a number of IP interfaces located on the same piece of hardware. If a resource failure occurs, only terminations in the shared risk group corresponding to the failed resource are affected while other terminations are not.
Gateway control protocol: Shared Risk Group package (Study Group 16)
- ICS
- CCS
- L79
- 发布
- 2013-03-01
- 实施
This Recommendation describes packages for the ITU-T H.248.1 gateway protocol related to data or telematic services. With terminations implementing these packages, a gateway is expected to handle initial modem negotiations, and the communication in voice, fax and text telephone call types.
Gateway control protocol: Facsimile, text conversation and call discrimination packages (Study Group 16)
- ICS
- CCS
- L79
- 发布
- 2013-03-01
- 实施
Information technology - Telecommunications and information exchange between systems - Near Field Communication - Interface and Protocol (NFCIP-1)
- ICS
- 35.100.10
- CCS
- L79
- 发布
- 2013-03
- 实施
This standard is one of a series produced to facilitate the interconnection of automation system components. It is related to other standards in the set as defined by the three-layer fieldbus reference model described in IEC/TR 61158-1:2010. This standard contains material specific to the Type 21 communication protocol.
Industrial communication networks - Fieldbus specifications - Part 6-21: Application layer protocol specification - Type 21 elements (IEC 61158-6-21:2010); English version EN 61158-6-21:2012, only on CD-ROM
- ICS
- 35.100.70;35.160
- CCS
- L79
- 发布
- 2013-03
- 实施
- 2013-03-01
Industrial communication networks - Fieldbus specifications - Part 6-22: Application layer protocol specification - Type 22 elements (IEC 61158-6-22:2010); English version EN 61158-6-22:2012, only on CD-ROM
- ICS
- 35.100.70;35.160
- CCS
- L79
- 发布
- 2013-03
- 实施
- 2013-03-01
The Fieldbus Application Layer (FAL) provides user programs with a means to access the fieldbus communication environment. In this respect,the FAL can be viewed as a "window between corresponding application programs." This standard provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type 19 fieldbus. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions,with attendant risk to equipment,plant and possibly human life.
Industrial communication networks - Fieldbus specifications - Part 6-19: Application layer protocol specification - Type 19 elements (IEC 61158-6-19:2010); English version EN 61158-6-19:2012, only on CD-ROM
- ICS
- 35.100.70;35.160
- CCS
- L79
- 发布
- 2013-03
- 实施
- 2013-03-01
Multi-Hop Delivery Specification of a Data Link Sub-Layer
- ICS
- 35.100.20;35.110
- CCS
- L79
- 发布
- 2013
- 实施
Layer 4 Specification for TR-51
- ICS
- 35.100.40;35.110
- CCS
- L79
- 发布
- 2013
- 实施
本标准规定了基于shim6的IPv6站点多归属的技术要求,规定了shim6的特征,设计目标和操作原理,包括消息格式,协议处理规则,以及如何在两个通信节点间检测到失败,同时还规定了一个探测协议。如果一个失败发生了且能找到另一对可操作的接口和(或)地址,使用该探测协议可用于选择相同的节点之间的另一对可操作的接口和(或)地址。本标准适用于支持IPv6站点多归属协议的主机和网络设备。
Technical requirements of multihoming shim protocol for IPv6
- ICS
- 35.100.30
- CCS
- L79
- 发布
- 2012-12-28
- 实施
- 2013-03-01
Information technology－Telecommunications and information exchange between systems－Formal description of ISO 8072 in LOTOS
- ICS
- 35.100.30
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- L79
- 发布
- 2012-12-28
- 实施
Information technology - ASN.1 encoding rules: Mapping W3C XML schema definitions into ASN.1; Technical Corrigendum 1
- ICS
- 35.100.60
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- L79
- 发布
- 2012-12
- 实施
Information technology - Abstract Syntax Notation One (ASN.1): Information object specification; Technical Corrigendum 1
- ICS
- 35.100.60
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- L79
- 发布
- 2012-12
- 实施
Information technology - ASN.1 encoding rules: Specification of Encoding Control Notation (ECN); Technical Corrigendum 1
- ICS
- 35.100.60
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- L79
- 发布
- 2012-12
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Information technology - Distributed Application Platforms and Services (DAPS) - General technical principles of Service Oriented Architecture
- ICS
- 35.100.05
- CCS
- L79
- 发布
- 2012-12
- 实施
Information technology - ASN.1 encoding rules: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER); Technical Corrigendum 1
- ICS
- 35.100.60
- CCS
- L79
- 发布
- 2012-12
- 实施
Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation; Technical Corrigendum 1
- ICS
- 35.100.60
- CCS
- L79
- 发布
- 2012-12
- 实施
