Configuring the PSTN (FXO) Gateway on the SPA3102

6

 

How PSTN-To-VoIP Calls Work

 

 

 

 

 

Parameter

Web

Description

Values

 

Page

 

 

 

 

 

 

Disconnect

PSTN

Tone Script of the disconnect tone to

ToneScript

Tone:

Line

detect. The ATA device supports two

The default

 

 

frequency components. If the tone has

 

 

is 480@-

 

 

only one frequency, use the same value

 

 

30,620@-

 

 

for both frequencies.

 

 

30;4(.25/

 

 

 

 

 

Each cadence segment must have the

.25/1+2)”

 

 

same frequency.

 

 

 

The level value is the threshold to detect

 

 

 

each tone.

 

 

 

The total duration is the minimum duration

 

 

 

of the tone to be recognized as the

 

 

 

disconnect tone

 

 

 

 

 

Detect Polarity

PSTN

If yes, the ATA device interprets polarity

Yes or No

Reversal:

Line

reversal as a disconnect signal.

The default

 

 

 

 

 

On an inbound PSTN call, ATA device

is Yes.

 

 

disconnects on the first polarity reversal.

 

 

 

On an outbound PSTN call, ATA device

 

 

 

disconnects on the second polarity

 

 

 

reversal (because the first polarity

 

 

 

reversal indicates the outbound call is

 

 

 

connected).

 

 

 

 

 

Detect

PSTN

If yes, the ATA device interprets the

Yes or No

Disconnect

Line

disconnect tone as specified in the

The default

Tone:

 

Disconnect Tone parameter as the

 

is Yes.

 

 

disconnect signal.

 

 

 

 

 

 

 

Silence

PSTN

This is the signal energy threshold. Below

very low,

Threshold:

Line

this threshold is considered silence.

low,

 

 

 

medium,

 

 

 

high, very

 

 

 

high

 

 

 

The default

 

 

 

is Medium.

 

 

 

 

ATA Administration Guide

100

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