| Características de transmisión de los terminales digitales sin hilos y móviles |
 |
Esta Recomendación expone los requisitos de calidad de funcionamiento audio de los microteléfonos digitales portátiles sin hilos y móviles. Se aplican a los sistemas de banda estrecha (3,1 kHz), independientemente de un algoritmo de codificación utilizado en el terminal. También se indican los correspondientes métodos de prueba.Se especifican los requisitos de los principales parámetros de calidad de funcionamiento electroacústica que afectan a la calidad, incluidos los niveles de emisión y recepción, respuestas de frecuencia, efecto local, estabilidad, trayecto de eco y retardo. Los requisitos indicados en la Recomendación deben asegurar una calidad de servicio satisfactoria en un alto porcentaje de instalaciones en condiciones normales. |
|
| Citation: |
https://handle.itu.int/11.1002/1000/4752 |
| Series title: |
P series: Telephone transmission quality, telephone installations, local line networks
P.300-P.399: Voice terminal characteristics |
| Approval date: |
1999-09-30 |
| Provisional name: | P.CMT |
| Approval process: | TAP |
|
Status: |
Superseded |
|
Maintenance responsibility: |
ITU-T Study Group 12 |
|
Further details: |
Patent statement(s)
|
|
|
|
|
|
ITU-T Supplement
|
Title
|
Status
|
Summary
|
Table of contents
|
Download
|
|
P Suppl. 10 (11/1988)
|
Considerations relating to transmission characteristics for analogue handset telephones
|
In force
|
-
|
here
|
here
|
|
P Suppl. 16 (11/1988)
|
Guidelines for placement of microphones and loudspeakers in telephone conference rooms and for group audio terminals (GATs)
|
In force
|
-
|
here
|
here
|
|
P Suppl. 20 (03/1993)
|
Examples of measurements of handset receive-frequency responses: dependence on earcap leakage losses
|
In force
|
-
|
here
|
here
|
|
P Suppl. 23 (02/1998)
|
ITU-T coded-speech database
|
In force
|
here
|
here
|
here
|
|
P Suppl. 24 (10/2005)
|
Parameters describing the interaction with spoken dialogue systems
|
In force
|
here
|
here
|
here
|
|
P Suppl. 25 (01/2011)
|
Parameters describing the interaction with multimodal dialogue systems
|
In force
|
here
|
here
|
here
|
|
P Suppl. 26 (09/2017)
|
Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality
|
In force
|
here
|
here
|
here
|
|
P Suppl. 28 (09/2020)
|
Considerations for the development of new QoS and QoE related objective models to be embedded in Recommendations prepared by ITU-T Study Group 12
|
In force
|
here
|
here
|
here
|
|
P Suppl. 31 (01/2025)
|
Subjective quality evaluation of audiovisual communication in videotelephony services
|
In force
|
here
|
here
|
here
|
|
