ISO/IEC TR 22767:2005

Information technology — Telecommunications and information exchange between systems — Using CSTA for SIP phone user agents (uaCSTA)

ISO/IEC TR 22767:2005 describes how CSTA can be used to provide a subset of CSTA call control functionality, called first party call control, for Session Initiation Protocol (SIP) user agents. The term uaCSTA (for user agent CSTA) refers to transporting ECMA-323 (CSTA XML) messages over a SIP session. SIP is a control (signalling) protocol for creating, modifying, and terminating sessions with one or more participants. These sessions include Internet telephone calls, multimedia distribution, and multimedia conferences. CSTA standardizes a very powerful and flexible set of application services to observe and control voice and non-voice media calls as well as control and observe non-call related features. uaCSTA leverages SIP mechanisms to provide a highly featured, robust, and extensible set of features to support applications in the Enterprise environment. uaCSTA can be implemented by several different types of SIP user agents: directly by a SIP user agent on a SIP phone, uaCSTA can also be implemented by a SIP B2BUA to augment 3PCC functionality, and by a proxy server that is front-ending a PBX.

Technologies de l'information — Télécommunications et échange d'information entre systèmes — Utilisation de CSTA pour agents d'utilisateurs de téléphone de SIP (uaCSTA)

General Information

• Status: Published
• Publication Date: 25-Aug-2005
• ICS: 35.100.30 - Network layer
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 06-Jul-2015

Standards Content (Sample)

TECHNICAL ISO/IEC
REPORT TR
22767
First edition
2005-08-15


Information technology —
Telecommunications and information
exchange between systems — Using
CSTA for SIP phone user agents
(uaCSTA)
Technologies de l'information — Télécommunications et échange
d'information entre systèmes — Utilisation de CSTA pour agents
d'utilisateurs de téléphone de SIP (uaCSTA)




Reference number
ISO/IEC TR 22767:2005(E)
©
ISO/IEC 2005

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ISO/IEC TR 22767:2005(E)
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©  ISO/IEC 2005
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ii © ISO/IEC 2005 – All rights reserved

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ISO/IEC TR 22767:2005(E)
Contents Page
Foreword. vii
Introduction . viii
1 Scope .1
2 Purpose.1
3 Normative references .2
4 Terminology .2
4.1 General terms.2
4.2 SIP/CSTA Terminology Mappings.3
5 Example Environments for uaCSTA .3
5.1 Controlling and Observing a SIP Phone .3
5.2 Controlling and Observing a SIP Phone by Augmenting B2BUA Functionality .4
5.3 Controlling a PBX Phone .4
6 Example User Agent Configurations .5
6.1 Single Line Phone UA .5
6.2 Multi Line Phone UA.6
6.3 Bridged Appearance Phone and other Advanced UA Configurations.6
7 SIP Transport Mechanism for CSTA Messages.7
7.1 Establishing a CSTA Application Session .7
7.2 Transporting CSTA Service Requests and Responses.8
7.3 Starting a Monitor and Transporting CSTA Events.9
8 uaCSTA Profiles.9
8.1 Minimal uaCSTA Call Control Profile.10
8.1.1 Services .10
8.1.2 Events .10
8.2 Basic uaCSTA Call Control Profile.10
8.2.1 Services .10
8.2.2 Events .11
8.3 Advanced uaCSTA Call Control Profile.11
8.3.1 Services .11
8.3.2 Events .12
8.4 Conferencing uaCSTA Call Control Feature Profile.12
8.4.1 Services .12
8.4.2 Events .13
8.5 Basic uaCSTA Device Feature Profile .13
8.5.1 Services .13
8.5.2 Events .13
8.6 Speaker uaCSTA Device Feature Profile.13
8.6.1 Services .13
8.6.2 Events .13
9 CSTA Calls and Connections .13
9.1 CSTA Connection State Model.14
9.2 Connection State Transitions for CSTA Calls .14
9.2.1 Incoming Call .14
9.2.2 Outgoing Call .15
10 Call Control.15
10.1 Alternate Call.15
10.1.1 Service Request.16
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ISO/IEC TR 22767:2005(E)
10.1.2 Positive Service Response . 16
10.1.3 Negative Service Response . 16
10.2 Answer Call. 17
10.2.1 Service Request . 17
10.2.2 Positive Service Response . 18
10.2.3 Negative Service Response . 18
10.3 Clear Connection . 19
10.3.1 Service Request . 19
10.3.2 Positive Service Response . 19
10.3.3 Negative Service Response . 19
10.4 Consultation Call. 20
10.4.1 Service Request . 20
10.4.2 Positive Service Response . 21
10.4.3 Negative Service Response . 21
10.5 Deflect Call. 22
10.5.1 Service Request . 22
10.5.2 Positive Service Response . 22
10.5.3 Negative Service Response . 23
10.6 Generate Digits. 23
10.6.1 Service Request . 24
10.6.2 Positive Service Response . 24
10.6.3 Negative Service Response . 24
10.7 Hold Call. 25
10.7.1 Service Request . 25
10.7.2 Positive Service Response . 25
10.7.3 Negative Service Response . 26
10.8 Make Call. 26
10.8.1 Service Request . 26
10.8.2 Positive Service Response . 27
10.8.3 Negative Service Response . 27
10.9 Reconnect Call . 28
10.9.1 Service Request . 28
10.9.2 Positive Service Response . 29
10.9.3 Negative Service Response . 29
10.10 Retrieve Call. 30
10.10.1 Service Request . 30
10.10.2 Positive Service Response . 30
10.10.3 Negative Service Response . 30
10.11 Single Step Transfer Call. 31
10.11.1 Service Request . 31
10.11.2 Positive Service Response . 32
10.11.3 Negative Service Response . 32
10.12 Transfer Call . 33
10.12.1 Service Request . 33
10.12.2 Positive Service Response . 34
10.12.3 Negative Service Response . 34
11 Physical Phone Features. 35
11.1 Get Message Waiting Indicator. 35
11.1.1 Service Request . 36
11.1.2 Service Response . 36
11.2 Set Message Waiting Indicator . 36
11.2.1 Service Request . 36
11.2.2 Service Response . 37
11.3 Get Speaker Mute. 37
11.3.1 Service Request . 37
11.3.2 Service Response . 37
11.4 Set Speaker Mute . 38
11.4.1 Service Request . 38
11.4.2 Service Response . 38
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ISO/IEC TR 22767:2005(E)
11.5 Get Speaker Volume.39
11.5.1 Service Request.39
11.5.2 Service Response.39
11.6 Set Speaker Volume .40
11.6.1 Service Request.40
11.6.2 Service Response.40
12 Logical Phone Features .41
12.1 Get Do Not Disturb.41
12.1.1 Service Request.41
12.1.2 Service Response.41
12.2 Set Do Not Disturb.41
12.2.1 Service Request.42
12.2.2 Service Response.42
12.3 Get Forwarding .42
12.3.1 Service Request.42
12.3.2 Service Response.42
12.4 Set Forwarding.43
12.4.1 Service Request.43
12.4.2 Service Response.44
13 Monitoring Services and Events .44
13.1 Monitor Start.44
13.1.1 Service Request.44
13.1.2 Positive Service Response .45
13.1.3 Negative Service Response.45
13.2 Monitor Stop.46
13.2.1 Service Request.46
13.2.2 Positive Service Response .47
13.2.3 Negative Service Response.47
13.3 Events .47
14 Snapshot Services.48
14.1 Snapshot Device.48
14.1.1 Service Request.48
14.1.2 Positive Service Response .48
14.1.3 Negative Service Response.51
15 Discovery and System Status Services .51
15.1 Get CSTA Features .51
15.1.1 Service Request.52
15.1.2 Service Response.52
15.1.3 Negative Service Response.53
15.2 Request System Status.53
15.2.1 Service Request.53
15.2.2 Service Response.53
15.2.3 Negative Service Response.54
15.3 System Status .54
15.3.1 Service Request.54
15.3.2 Positive Service Response .55
15.3.3 Negative Service Response.55
16 ECMA-323 Illustrative Examples .55
16.1 Controlling a SIP UA.55
16.1.1 Creating an Application Session, Establishing a Monitor for a SIP Phone.56
16.1.2 Creating a Call from a SIP UA, Clearing a Call at a SIP UA .58
16.1.3 Answering and Clearing an Incoming Call at a UA .63
16.1.4 Answering an Incoming Call at a UA (no CSTA monitor or CSTA events).65
16.1.5 Examples of Exception Conditions at a SIP UA .67
16.2 Controlling a PBX Phone .68
16.2.1 Creating an Application Session, Establishing a Monitor for a PBX Phone .69
16.2.2 Creating a Call from a PBX Phone, Clearing a Call at a PBX Phone .71
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ISO/IEC TR 22767:2005(E)
16.2.3 Answering and Clearing an Incoming Call at a PBX Phone . 75
16.2.4 Examples of Exception Conditions at a PBX Phone . 78
Annex A (informative) Example use of SIP and TEL URIs. 80

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ISO/IEC TR 22767:2005(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
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technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
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an International Standard requires approval by at least 75 % of the national bodies casting a vote.
In exceptional circumstances, the joint technical committee may propose the publication of a Technical Report
of one of the following types:
— type 1, when the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts;
— type 2, when the subject is still under technical development or where for any other reason there is the
future but not immediate possibility of an agreement on an International Standard;
— type 3, when the joint technical committee has collected data of a different kind from that which is
normally published as an International Standard (“state of the art”, for example).
Technical Reports of types 1 and 2 are subject to review within three years of publication, to decide whether
they can be transformed into International Standards. Technical Reports of type 3 do not necessarily have to
be reviewed until the data they provide are considered to be no longer valid or useful.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC TR 22767, which is a Technical Report of type [3], wa
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