ATA Voice Field Reference

Trunk Group page (SPA8000)

B

Contact List

This parameter determines which trunk lines to ring on an

 

incoming call.

 

When an incoming call is detected by the Trunk SUA (SIP

 

User Agent), the SUA first checks if there is capacity to

 

handle the call. If not, the SUA rejects the call with a 486

 

response. If there is spare capacity, the SUA consults the

 

Contact List to determine which lines to ring (that is, for the

 

proxy to send SIP INVITE to), and starts "hunting."

 

The Contact List specifies the lines, the hunt method, and

 

other options.

 

EXAMPLES:

 

•

1,2,3,4,5,6,7,8,hunt=re;*;1

 

 

Lines 1 through 8 are participating (1,2,3,4,5,6,7,8).

 

 

The Trunk SUA will hunt to each specified line in the specified

 

 

order (hunt=re). The call stays with a selected line until the

 

 

call is either answered, rejected, or cancelled by the caller

 

 

(*). The Trunk SUA replies 486 right away if no line is

 

•

available to ring at the moment (1).

 

?,hunt=al;30;0,cfwd=14089993326

 

 

A wildcard character is used to represent “all trunk lines.” All

 

 

lines ring simultaneously (hunt=al). If there is no answer

 

 

after 30 seconds (30), the call is forwarded to the specified

 

•

number (cfwd=14089993326).

 

?,hunt=ra;12;1,cfwd=14089993326

 

 

A wildcard character is used to represent “all trunk lines.” The

 

 

Trunk SUA hunts in random order (hunt=ra). If there is no

 

 

answer within 12 seconds (12), the Trunk SUA chooses

 

 

another line at random. If there is no answer after 1 round (1),

 

 

the call is forwarded to forwarded to the specified number

 

 

(cfwd=14089993326).

Contact List

NOTES:

(continued)

• The Trunk SUA rings only trunk lines (lines that are assigned

 

 

 

to a trunk group through the Voice tab > Line page, Trunk

 

 

Group field).

 

 

• The Trunk SUA will not ring any standalone lines that are included in

 

 

the Contact List.

 

 

• The Trunk SUA will ring any trunk line that is included in the list, even if

 

 

it is not assigned to this particular trunk.

 

• You can instruct the SPA8000 to hunt only the phones that are

 

 

on-hook, through the Voice tab > SIP page, Trunking

 

 

Parameters section, Hunt Policy field. See “Trunking

 

 

Parameters section (SPA8000),” on page144.

 

 

 

ATA Administration Guide

187

Page 188 Page 190
Page 189
Image 189
Cisco Systems PAP2T, SPA2102, SPA3102, WRP400, SPA8000 manual Number cfwd=14089993326
Page 188 Page 190

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