ATA Voice Field Reference

PSTN Line page (SPA3102)

B

Use DNS SRV

Whether to use DNS SRV lookup for Proxy and Outbound

 

Proxy.

 

The default is no.

 

 

DNS SRV Auto

If enabled, the PAP2T will automatically prepend the Proxy

Prefix

or Outbound Proxy name with _sip._udp when performing

 

a DNS SRV lookup on that name.

 

The default is no.

 

 

Proxy Fallback Intvl

This parameter sets the delay (sec) after which the PAP2T

 

will retry from the highest priority proxy (or outbound

 

proxy) servers after it has failed over to a lower priority

 

server. This parameter is useful only if the primary and

 

backup proxy server list is provided to the PAP2T via DNS

 

SRV record lookup on the server name. (Using multiple

 

DNS A record per server name does not allow the notion of

 

priority and so all hosts will be considered at the same

 

priority and the PAP2T will not attempt to fall back after a

 

fail over).

 

The default is 3600.

 

 

Proxy Redundancy

PAP2T will make an internal list of proxies returned in DNS

Method

SRV records. In normal mode, this list will contain proxies

 

ranked by weight and priority.

 

if Based on SRV port is configured the PAP2T does normal

 

first, and also inspect the port number based on 1st proxy’s

 

port on the list.

 

The default is Normal.

 

 

Voice Mail Server

Enter the URL or IP address of the server.

 

 

Mailbox Subscribe

Expiry time to the voice mail server. The time to send

Expires

another subscribe message to the voice mail server.

 

 

PSTN Line page (SPA3102)

On the SPA3102, you can use the Voice tab > PSTN Line page to configure your PSTN line. This page includes the following sections:

”Line Enable section” section on page166

”NAT Settings section” section on page191

ATA Administration Guide

190

Page 192
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Cisco Systems WRP400, SPA2102, SPA8000, PAP2T manual Pstn Line page SPA3102

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.