ATA Voice Field Reference

SIP page

B

SIP Timer B

INVITE time-out value, which can range from 0 to 64

 

seconds.

 

The default is 32.

 

 

SIP Timer F

Non-INVITE time-out value, which can range from 0 to 64

 

seconds.

 

The default is 32.

 

 

SIP Timer H

INVITE final response, time-out value, which can range from

 

0 to 64 seconds.

 

The default is 32.

 

 

SIP Timer D

ACK hang-around time, which can range from 0 to 64

 

seconds.

 

The default is 32.

 

 

SIP Timer J

Non-INVITE response hang-around time, which can range

 

from 0 to 64 seconds.

 

The default is 32.

 

 

INVITE Expires

INVITE request Expires header value. If you enter 0, the

 

Expires header is not included in the request.

 

The default is 240. Range: 0–(231–1).

ReINVITE Expires

ReINVITE request Expires header value. If you enter 0, the

 

Expires header is not included in the request.

 

The default is 30. Range: 0–(231–1).

Reg Min Expires

Minimum registration expiration time allowed from the

 

proxy in the Expires header or as a Contact header

 

parameter. If the proxy returns a value less than this setting,

 

the minimum value is used.

 

The default is 1.

 

 

Reg Max Expires

Maximum registration expiration time allowed from the

 

proxy in the Min-Expires header. If the value is larger than

 

this setting, the maximum value is used.

 

The default is 7200.

 

 

Reg Retry Intvl

Interval to wait before the ATA device retries registration

 

after failing during the last registration.

 

The default is 30.

 

 

ATA Administration Guide

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Cisco Systems SPA8000, SPA2102, SPA3102, WRP400, PAP2T manual ATA Administration Guide 136
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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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