Chapter 5 Parameters and Defaults

Operating Parameters

•Bit 3: Throughput bit—1=request high throughput

•Bit 4: Delay bit—1=request low delay

•Bits 5-7: Specify datagram precedence. Values range from 0 (normal precedence) to 7 (network control).

Value Type

Bitmap

Default

0xB8

Voice Configuration Menu Access Code

255

SigTimer

Description

This parameter controls various timeout values. Table 5-5 on page 5-32contains bit definitions of this parameter.

Value Type

Bitmap

Default 0x01418564

 

 

 

 

 

Voice Configuration Menu Access Code

 

 

 

 

318

 

Table 5-5 SigTimer Parameter Bit Definitions

 

 

 

 

 

Bit Number

 

Definition

 

 

 

 

 

0-7

 

 

 

Call waiting period—The period between each burst of call-waiting tone.

 

 

 

 

 

Range: 0 to 255 in 0.1 seconds

 

 

 

 

 

Default: 100 (0x64=100 seconds)

 

 

 

 

 

8-13

 

 

 

Reorder delay—The delay in playing the reorder (fast busy) tone after the far-end caller hangs up.

 

 

 

 

 

Range: 0 to 62 in seconds

 

 

 

 

 

Default—5 (seconds)

 

 

 

 

 

63—Never play the reorder tone.

 

 

 

 

 

14-19

 

 

 

Ring timeout—When a call is not answered, this is the amount of time after which Cisco ATA rejects the

 

 

 

 

 

incoming call.

 

 

 

 

 

Range—0 to 63 in 10 seconds

 

 

 

 

 

Default—6 (60 seconds)

 

 

 

 

 

0—Never times out

 

 

 

 

 

 

 

 

 

 

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (H.323)

 

 

 

 

 

5-32

 

 

 

OL-4008-01

 

 

 

 

 

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Cisco Systems ATA 188 manual SigTimer
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ATA 188 specifications

The Cisco Systems ATA 188 is a versatile Analog Telephone Adapter designed to facilitate the integration of traditional telephone systems with Voice over Internet Protocol (VoIP) networks. This device has been key in bridging the gap between legacy telephony and modern IP-based communication, allowing users to leverage their existing analog phones while enjoying the benefits of digital connectivity.

One of the main features of the ATA 188 is its ability to connect regular analog phones to a VoIP network, enabling users to make and receive calls over the internet. This significantly reduces calling costs, especially for long-distance and international calls. The ATA 188 supports two phone lines, allowing simultaneous voice calls. This dual-line capability makes it a suitable choice for small businesses or home offices that require multiple lines without the need for extensive infrastructure.

The device is equipped with various technologies that enhance its functionality. It supports the Session Initiation Protocol (SIP) and H.323, making it compatible with a wide range of VoIP service providers. Additionally, the ATA 188 features Quality of Service (QoS) settings, which prioritize voice traffic over the internet, ensuring clear voice quality without interruptions or delays. This is essential for maintaining a professional communication experience, especially in business environments.

Another characteristic of the ATA 188 is its user-friendly configuration interface. It allows users to easily set up and manage their devices through a web-based portal. The configuration process is straightforward, with options to adjust settings such as codec selection, call features including call waiting, and call forwarding functionalities.

Security is also a priority for the ATA 188, as it provides robust protocols to protect call data. The device supports Secure Real-time Transport Protocol (SRTP) and Transport Layer Security (TLS) to encrypt voice traffic and manage signaling securely. This ensures that sensitive conversations remain confidential.

Overall, the Cisco Systems ATA 188 is a reliable and efficient solution for users looking to transition from traditional telephony to VoIP. Its dual-line capacity, compatibility with multiple VoIP standards, user-friendly configuration, and built-in security features make it a valuable asset for both personal and professional communication solutions. In an ever-evolving telecommunications landscape, the ATA 188 remains a relevant and practical choice for integrating legacy telephony with modern internet-based services.
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