Configuring the PSTN (FXO) Gateway on the SPA3102

6

 

How PSTN-To-VoIP Calls Work

 

 

 

 

 

VoIP Outbound Call Routing

Calls made from Line 1 are routed through the configured Line 1 service provider, by default. You can override this behavior by IP dialing, through which the calls can be routed to any IP address entered by the user. The ATA device allows flexible call routing with four sets of gateway parameters and configurable dial plans. The following table lists VoIP outbound call routing parameters.

Parameter

Web

Description

Values

 

Page

 

 

 

 

 

 

Gateway 1

Line 1

Fully qualified domain name (or IP

Domain name or IP

 

 

address) of a gateway. If the port

address.

 

 

number is not specified, 5060 is

The default is blank.

 

 

assumed.

 

 

 

 

 

 

 

GW1 Nat

Line 1

Whether to enable NAT mapping

Yes or No

Mapping

 

when using Gateway 1.

The default is no.

 

 

Enable

 

 

 

 

 

 

 

GW1 User ID

Line 1

The authentication user name when

31-character string

 

 

using Gateway 1.

The default is blank.

 

 

 

 

 

 

 

GW2 Password

Line 1

The authentication password when

31-character string.

 

 

using Gateway 1.

The default is blank.

 

 

 

 

 

 

 

Gateways 1 to 4 can be specified in a dial plan with the special identifier gw1, gw2, gw3, or gw4. Also, gw0 represents the internal PSTN gateway via the FXO port. You can specify in the dial plan to use gwx (x = 0,1,2,3,4) when making certain calls. In general, you can specify any gateway address in the dial plan. In addition, three parameters are added that can be used with call routing:

•

•

•

usr: User-id used for authentication with the given gateway

pwd: Password used for authentication with the given gateway

nat: Enable or disable NAT mapping when calling the gateway

ATA Administration Guide

101

Page 102 Page 104
Page 103
Image 103
Cisco Systems SPA8000, SPA2102, SPA3102, WRP400, PAP2T manual VoIP Outbound Call Routing
Page 102 Page 104

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.
Top Page Image Contents