Contents

About This Document

ix

Chapter 1: Introducing Cisco Small Business Analog Telephone Adapters

16

Comparison of ATA Devices

17

ATA Connectivity Requirements

20

PAP2T Connectivity

21

SPA2102 Connectivity

22

SPA3102 Connectivity

23

SPA8000 Connectivity

24

ATA Software Features

25

Voice Supported Codecs

25

SIP Proxy Redundancy

27

Other ATA Software Features

27

Chapter 2: Basic Administration and Configuration

35

Basic Services and Equipment Required

35

Downloading Firmware

36

Basic Installation and Configuration

36

Upgrading the Firmware for the ATA Device

36

Setting up Your ATA Device

37

Using the Administration Web Server

38

Connecting to the Administration Web Server

39

Setting Up the WAN Configuration for Your ATA Device

39

Registering to the Service Provider

41

Advanced Configurations

42

Upgrading, Rebooting, and Resyncing Your ATA Device

42

Upgrade URL

42

Resync URL

43

ATA Administration Guide

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Cisco Systems SPA8000, SPA2102, SPA3102, WRP400, PAP2T Contents About This Document, Basic Administration and Configuration
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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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