Introducing Cisco Small Business Analog Telephone Adapters

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ATA Software Features

 

 

 

 

 

codec is to be used for each line. G.711a and G.711u are always enabled. Configure your preferred codec in the (FXS) tab in the Administration Web Server. See “ATA Voice Field Reference,” on page121. See also “Supported Codecs,” on page 54 for a list of which codecs are supported on each ATA device.

Codec (Voice Compression

Description

Algorithm)

 

 

 

G.711 (A-law and mμ-law)

This very low complexity codec supports

 

uncompressed 64 kbps digitized voice transmission at

 

one through ten 5 ms voice frames per packet. This

 

codec provides the highest voice quality and uses the

 

most bandwidth of any of the available codecs.

 

 

G.726

This low complexity codec supports compressed 16,

 

24, 32, and 40 kbps digitized voice transmission at one

 

through ten 10 ms voice frames per packet. This codec

 

provides high voice quality.

 

 

G.729a

The ITU G.729 voice coding algorithm is used to

 

compress digitized speech. Cisco supports G.729.

 

G.729a is a reduced complexity version of G.729. It

 

requires about half the processing power to code

 

G.729. The G.729 and G.729a bit streams are

 

compatible and interoperable, but not identical.

 

 

G.723.1

The ATA device supports the use of ITU G.723.1 audio

 

codec at 6.4 kbps. Up to two channels of G.723.1 can be

 

used simultaneously. For example, Line 1 and Line 2 can

 

be using G.723.1 simultaneously, or Line 1 or Line 2 can

 

initiate a three-way conference with both call legs using

 

G.723.1.

 

NOTE: The WRP400 device does not support the

 

G.723.1 audio codec.

 

 

NOTE When no static payload value is assigned per RFC 1890, the ATA device can support dynamic payloads for G.726.

ATA Administration Guide

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Cisco Systems SPA8000, SPA2102, SPA3102, WRP400, PAP2T manual Audio codec
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PAP2T, SPA8000, SPA3102, WRP400, SPA2102 specifications

The Cisco Systems SPA2102 is a versatile Voice over Internet Protocol (VoIP) adapter that serves as a bridge between traditional telephony systems and modern IP networks. Designed primarily for small to medium businesses, the SPA2102 is highly regarded for its reliability, ease of use, and rich feature set. This device allows users to make and receive phone calls over the internet while maintaining the ability to connect traditional analog phones.

One of the standout features of the SPA2102 is its dual-port capability. The device includes two FXS ports, allowing users to connect two separate analog telephones. This makes it an ideal choice for businesses that want to retain their existing telephony infrastructure while transitioning to a VoIP system. The ability to utilize two telephone lines simultaneously provides flexibility and convenience, especially for users in a busy office environment.

The SPA2102 leverages Session Initiation Protocol (SIP) technology, which is widely recognized for its robustness and interoperability. The support for SIP ensures that the SPA2102 can work seamlessly with various VoIP service providers, offering users a broad range of options for their telecommunication needs. In addition to SIP, the device supports various codecs, including G.711, G.726, and G.729, allowing for flexible audio quality settings and bandwidth management.

Security is also a critical aspect of the SPA2102. It incorporates advanced encryption methods, such as Secure Real-time Transport Protocol (SRTP) and Transport Layer Security (TLS), to protect voice communications from potential eavesdropping. This focus on security makes the SPA2102 a reliable choice for businesses concerned about the confidentiality of their conversations.

The device is easy to configure and manage, thanks to its web-based interface. This allows administrators to quickly set up the adapter, manage network settings, and troubleshoot any issues that may arise. Furthermore, the SPA2102 supports Quality of Service (QoS) features, ensuring that voice traffic is prioritized over other types of network traffic, which enhances call quality and reliability.

Overall, the Cisco SPA2102 is a powerful, user-friendly VoIP adapter that combines traditional telephony with modern IP technology. Its dual-port capability, support for SIP, extensive security features, and ease of configuration make it a solid choice for businesses looking to innovate their communication systems while minimizing disruption. Whether used in a small office or a larger organizational setting, the SPA2102 continues to be a reliable component of VoIP solutions.
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