Introducing Cisco Small Business Analog Telephone Adapters

1

 

Comparison of ATA Devices

 

 

 

 

 

Comparison of ATA Devices

Each ATA device is an intelligent low-density Voice over IP (VoIP) gateway that enables carrier-class residential and business IP Telephony services delivered over broadband or high-speed Internet connections. An ATA device maintains the state of each call it terminates and makes the proper reaction to user input events (such as on/off hook or hook flash). The ATA devices use the Session Initiation Protocol (SIP) open standard so there is little or no involvement by a “middle-man” server or media gateway controller. SIP allows interoperation with all ITSPs that support SIP.

The following table summarizes the ports and features provided by the ATA devices described in this document.

Product

FXS

FXO

RJ-45

RJ-45

Voice

Description

Name

(Analog

PSTN

Internet

Ethernet

Lines

 

 

Phone)

 

(WAN)

(LAN)

 

 

 

 

 

 

 

 

 

PAP2T

2

—

1

—

2

Voice adapter with

 

 

 

 

 

 

two FXS ports.

 

 

 

 

 

 

 

SPA2102

2

—

1

1

2

Voice adapter with

 

 

 

 

 

 

router.

 

 

 

 

 

 

 

SPA3102

1

1

1

1

1

Voice adapter with

 

 

 

 

 

 

router and PSTN

 

 

 

 

 

 

connectivity.

 

 

 

 

 

 

 

SPA8000

8

—

1

Mainte-

8

Voice adapter with

 

 

 

 

nance

 

support for up to

 

 

 

 

only

 

eight FXS devices.

 

 

 

 

 

 

Supports SIP

 

 

 

 

 

 

Trunking for inbound

 

 

 

 

 

 

call routing to trunk

 

 

 

 

 

 

groups.

 

 

 

 

 

 

 

WRP400

2

—

1

4

2

Wireless-G IP router

 

 

 

 

 

 

with two FXS ports.

 

 

 

 

 

 

Provides ATA device

 

 

 

 

 

 

functionality. Can be

 

 

 

 

 

 

remotely

 

 

 

 

 

 

provisioned.

 

 

 

 

 

 

 

WRTP54G

2

—

1

4

2

Wireless-G IP router

 

 

 

 

 

 

with two FXS ports.

 

 

 

 

 

 

Provides ATA device

 

 

 

 

 

 

functionality.

 

 

 

 

 

 

 

ATA Administration Guide

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Cisco Systems PAP2T, SPA2102, SPA3102 Comparison of ATA Devices, Introducing Cisco Small Business Analog Telephone Adapters
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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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