Introducing Cisco Small Business Analog Telephone Adapters

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ATA Software Features

 

 

 

 

 

Feature

Description

 

 

DHCP Renewal on

SPA2102, SPA3102, and PAP2T voice devices typically

Timeout

operate in a network where a DHCP server assigns IP

 

addresses to the devices. Because IP addresses are a

 

limited resource, the DHCP server periodically renews the

 

device lease on the IP address. Therefore, if an ATA device

 

loses its IP address for any reason, or if some other device

 

on the network is assigned its IP address, the

 

communication between the SIP proxy and the device is

 

either severed or degraded.

 

Whenever an expected SIP response is not received

 

within a programmable amount of time after the

 

corresponding SIP command is sent, the DHCP Renewal

 

on Timeout feature automatically causes the device to

 

request a renewal of its IP address. If the DHCP server

 

returns the IP address that it originally assigned to the

 

device, the ATA device is presumed to be operating

 

correctly. If it returns a different address, the ATA device

 

changes its IP address to the new address provided by

 

the DHCP server. The ATA device then resets, and once

 

again sends a SIP register request for the DHCP server to

 

accept.

 

 

ATA Administration Guide

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Cisco Systems SPA3102, SPA2102, WRP400, SPA8000, PAP2T manual 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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