One-way Audio

Appendix A: Troubleshooting	ADTRAN IP SoftPhone User Manual

There are several factors that may affect sound quality when using the ADTRAN IP SoftPhone. These include the quality of the network connection, quality of the network device, and headset model. Some of the common problems experienced are given below, along with useful tips on how to minimize their effect.

Audio contains pops at loud points in voice

Popping sounds are a symptom of over-modulation. Ask the other party to decrease their microphone slider and/or adjust the microphone gain.

Audio contains bothersome background noise

Significant background noise can be due to the level of the silence threshold. Have the other party adjust their silence threshold, which they can do by running the Tuning Wizard.

Audio sounds choppy in a conference

Poor conference audio may be caused by upload bandwidth limitations. For example, some sites have

1 Mbps download bandwidth, but only 128 kbps upload bandwidth. Under such conditions, try multiple hosts for the conference, or have all participants disconnect and switch to a lesser bandwidth audio compression CODEC such as G.729.

Poor sound

Poor or scratchy sound is a symptom of a problem with network connections or a faulty network card. The following issues could contribute to poor sound quality.

•There may be packet loss on the IP network. Check the network performance, latency, and throughput. A 200 millisecond round trip latency as determined from a ping should deliver good audio quality.

•Older network devices may have performance problems. Make sure to use the latest driver.

There is an echo

The following tips may be useful for reducing echo heard during the conversation.

•Try using a headset plugged into the sound card. Another suggestion is to use a USB-enabled headset, which bypasses system sounds by acting as its own sound device.

•If using a boom type headset, note that some boom headsets can create feedback between the boom microphone and the headset earpiece.

•The microphone volume may not be muted in the playback section of Windows audio controls. When configuring sound, check the Windows volume control setting.

•Echo will occur if the microphone can pick up sounds coming from the speakers used for the softphone call (when not using an integrated headset).

•The microphone level might be too high or the amplifier might be turned on in the generic Windows audio controls.

If a firewall restricts incoming connections, the result can be one-way audio. Configure the ADTRAN IP SoftPhone to use the service provider’s Outbound Proxy (if available), as explained under Firewall and NAT Issues on page 46.

61950859L1-1A

1950859L1 specifications

ADTRAN 1950859L1 is a versatile network device designed to enhance broadband connectivity, primarily targeting service providers and enterprises seeking efficient and reliable network solutions. This model stands out in the realm of ethernet and fiber network technologies, thanks to its innovative features, robust technologies, and customer-centric characteristics.

One of the prominent features of the ADTRAN 1950859L1 is its advanced support for Ethernet in the First Mile (EFM), providing users with high-capacity and high-speed broadband connections. This capability is crucial for meeting the growing demand for bandwidth in both residential and business environments. The device also features extensive support for various copper and fiber connection types, making it adaptable to diverse network infrastructures.

In terms of technologies, the ADTRAN 1950859L1 incorporates the latest advancements in network management and monitoring. It offers robust diagnostic tools that allow network administrators to quickly troubleshoot issues and optimize performance. The device is built with high-level security protocols, ensuring that data integrity and user privacy are prioritized, which is especially critical for service providers managing sensitive customer information.

Another notable characteristic of the ADTRAN 1950859L1 is its scalability. The device is engineered to grow alongside your network needs, whether it's scaling up to meet increased data traffic or adapting to new technology implementations. This flexibility makes it an ideal choice for organizations planning for future expansions.

Additionally, the user-friendly interface of the ADTRAN 1950859L1 simplifies the deployment and management process. The streamlined setup procedures ensure that even organizations with limited IT resources can integrate and manage the device with minimal effort. Enhanced firmware provides continuous updates, keeping the device aligned with the latest trends and best practices in network technology.

Moreover, the ADTRAN 1950859L1 supports various Quality of Service (QoS) features, allowing for prioritized traffic management and ensuring that critical applications receive the necessary bandwidth. This guarantees that enterprises can deliver seamless services, minimizing latency and enhancing user experiences.

In conclusion, the ADTRAN 1950859L1 is a powerful networking solution that combines cutting-edge technology with user-friendly management features, making it a prime choice for service providers and enterprises looking to build reliable, high-performance networks. Its adaptability, security, and scalability characteristics position it as an essential tool in today’s digital landscape.