TS 101 108 : 8.0.1
Current
The latest, up-to-date edition.
DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); TANDEM FREE OPERATION (TFO); SERVICE DESCRIPTION, STAGE 1
Hardcopy , PDF
English
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Foreword
1 Scope
2 References
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 Description
4.1 Applicability of TFO to Basic Services
4.2 Support in Mobile Stations (MS)
4.3 Parameters to be indicated and negotiated
4.4 Provision of Service
4.5 Quality of Service (QoS)
5 Interaction with supplementary services
5.1 General
5.2 Explicit Call Transfer (ECT)
5.3 Call Wait/Call hold
5.4 Multiparty
5.5 Service Announcements
6 Interaction with Alternate and Followed by
services
7 Interaction with other speech services
8 Interaction with DTMF
9 Interaction with Lawful Intercept
Annex A (Informative): Limitations of initial
in-band TFO implementations
Annex B (Informative): Document change history
History
Specifies the stage 1 description for the Tandem Free Operation (TFO) feature which provides the capability to avoid using two GSM speech codecs in mobile to mobile speech calls. The primary aim is to realize improvements in speech quality.
| Committee |
SMG 11
|
| DevelopmentNote |
5.0.0 and 5.1.0 are withdrawn versions. (02/2003)
|
| DocumentType |
Standard
|
| Pages |
11
|
| PublisherName |
European Telecommunications Standards Institute
|
| Status |
Current
|
| ES 201 801 : 1.1.1 | SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); TRANSFER OF PERFORMANCE PARAMETERS OF CONNECTIONS ON A PER CALL BASIS; END-TO-END SPEECH TRANSMISSION PERFORMANCE ADDITIONAL NETWORK FEATURE (ANF); SERVICE DESCRIPTION |
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