¿Cómo solucionar problemas de audio unidireccional o no direccional?

Introducción

Visión general

Durante la comunicación de voz entre dos dispositivos terminales, pueden aparecer problemas de audio unidireccional o sin audio bilateral. El audio unidireccional significa que ambas partes responden la llamada normalmente, pero solo una escucha el sonido, mientras que la otra no percibe ningún audio. El audio bilateral nulo indica que la llamada se conecta correctamente, pero ninguno de los dos usuarios se escucha mutuamente.

Modelos aplicables

Todos los modelos de nuestros productos, incluidos dispositivos industriales y teléfonos IP.

Requisitos previos

① Preparar un PC de depuración con Wireshark instalado, conectado a la misma red local que los dispositivos, con acceso a los equipos y al servidor SIP.
② Verificar el suministro eléctrico, conexión de red correcta, arranque estable y conectividad al entorno de red implementado.

Diagrama de conexión de dispositivos y PC

Diagrama de conexión de dispositivos y PC

Método de resolución de fallos

Al analizar fallos de audio, primero se debe identificar el síntoma exacto del problema. En entornos reales, los interfonos industriales y controles de acceso suelen comunicarse con teléfonos IP. A continuación, se usan los términos interfono y teléfono para referirse a las dos partes de la llamada.

El interfono no escucha al teléfono

Si el interfono no recibe audio del teléfono, siga estos pasos:
1. Verifique el canal de audio en uso: auricular, manos libres o audífono. Si solo probó el auricular, cambie a manos libres para confirmar. Una causa frecuente es la conexión incorrecta del cable del auricular en el puerto de audífonos, generando fallos de captación de sonido.
2. Compruebe si la tecla de acceso rápido del interfono está configurada como Marcación rápida.
Al llamar desde el interfono, la tecla debe estar en modo marcación rápida:
Configuración de marcación rápida del interfono
Muchos usuarios configuran por error la opción Intercomunicación.
3. Si el fallo persiste en ambos modos, realice una captura de paquetes simultánea en interfono, teléfono y servidor, y envíe los archivos al soporte técnico.

El teléfono no escucha al interfono

1. Confirme si el fallo ocurre solo con el auricular o también en manos libres. Si solo falla el auricular, revise la conexión del cable.
2. Si la llamada se realiza mediante tecla rápida, verifique si el tipo de llamada es Marcación rápida o Intercomunicación. En caso de intercomunicación, cámbielo a marcación rápida; si requiere mantener el modo intercom, desactive el parámetro “Habilitar silencio de intercomunicación“ en la configuración del interfono.
Captura de paquetes de red
3. Realice la captura de paquetes según el apartado 2.3 y envíe los registros al soporte técnico.

Sin audio mutuo en la llamada

La falta de audio bilateral suele deberse a incompatibilidad de códecs de audio o fallos de transmisión RTP por problemas de red. Se requiere captura de paquetes para un análisis detallado. Pasos para la captura:
1. Acceda a la interfaz web del dispositivo A, ingrese a “Sistema” – “Herramientas auxiliares” – “Captura web” y haga clic en “Iniciar”.
Nota: Se recomienda el navegador Chrome para la captura web, por compatibilidad.
Captura de paquetes en dispositivo
2. Repita el proceso en el dispositivo B.
3. Active la captura de paquetes en el servidor (consulte al proveedor del servidor).
4. Realice y conteste la llamada, pruebe el audio en ambos dispositivos y cuelgue.
5. Detenga todas las capturas y envíe los tres archivos al equipo técnico.

Catálogo
Servicio al cliente Teléfono
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