ATA Voice Field Reference

PSTN Line page (SPA3102)

B

VoIP DLG Refresh

Interval between (SIP) Dialog refresh messages sent by

Intvl

the SPA to detect if the VoIP call-leg is still up. If value is set

 

to 0, SPA will not send refresh messages and VoIP call-leg

 

status is not checked by the SPA. The refresh message is a

 

SIP ReINVITE and the VoIP peer must response with a 2xx

 

response. If VoIP peer does not reply or response is not

 

greater than 2xx, the SPA will disconnect both PSTN and

 

VoIP call legs automatically. The range is 0-255.

 

The default is 30.

 

 

PSTN Ring Thru

Delay in seconds before starting to ring thru Line 1 after the

Delay

PSTN starts ringing. In order for Line 1 to have the caller-id

 

information, the delay should be set to larger than the delay

 

required to complete the PSTN caller-id delivery (such as

 

5s). The range is 0-255.

 

The default is 5.

 

 

PSTN-To-VoIP Call

Limit on the duration of a PSTN-To-VoIP Gateway Call. Unit

Max Dur

is in seconds. 0 means unlimited. The range is 0-

 

2147483647.

 

The default is 0.

 

 

VoIP-To-PSTN Call

Limit on the duration of a VoIP-To-PSTN Gateway Call. Unit

Max Dur

is in seconds. 0 means unlimited. The range is 0-

 

2147483647.

 

The default is 0.

 

 

PSTN Dialing Delay

Delay after hook before the SPA dials a PSTN number. The

 

range is 0-255.

 

The default is 1.

 

 

PSTN Ring Timeout

Delay after a ring burst before the SPA decides that PSTN

 

ring has ceased. The range is 0-255.

 

The default is 5.

 

 

PSTN Dial Digit Len

Determines the on/off time when transmitting digits

 

through the FXO port. The syntax is on-time/off-time,

 

where on-timeand off-timeare expressed in seconds with

 

up to two decimal places, within the permitted range,

 

which is from .05 to 3.00.

 

The default is .1/.1. If this value is blank, the default is used.

 

 

ATA Administration Guide

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Cisco Systems SPA8000, SPA2102, SPA3102, WRP400, PAP2T manual ATA Administration Guide 206
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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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