Chapter 1 Cisco Analog Telephone Adaptor Overview

Software Features

•Internet Control Message Protocol (ICMP)

•Internet Protocol (IP)

•Real-Time Transport Protocol (RTP)

•Transmission Control Protocol (TCP)

•Trivial File Transfer Protocol (TFTP)

•User Datagram Protocol (UDP)

Cisco ATA H.323 Services

For a list of required H.323 parameters as well as descriptions of all supported Cisco ATA H.323 services and cross references to the parameters for configuring these services, see Chapter 4, “Basic and Additional H.323 Services.”

These services include the following features:

•Supports direct IP dialing to and from a Cisco ATA without using an H.323 gatekeeper

•Supports direct IP dialing in addition to proxy-routed calls to and from either phone

•Uses the same configurable MediaPort to transmit and receive RTP audio

•Uses UDP only for H.323 RAS message transmission

•Uses a TCP connection for H.225/Q.931 signaling (such as call setup, call proceeding, alerting, and call connect)

•IP address assignment—DHCP-provided or statically configured

•Cisco ATA configuration by means of a TFTP server, web browser, or voice configuration menu.

•VLAN configuration

•Cisco Discovery Protocol (CDP)

•Low-bit-rate codec selection

•User authentication

•Configurable tones (dial tone, busy tone, alert tone, reorder tone, call waiting tone)

•Dial plans

•User-configurable, call-waiting, permanent default setting

•Silence suppression and comfort noise generation for G.711, G.723.1 (G.723.1 Annex A), and G.,729 (G.729 Annex B)

•Caller ID format

•Ring cadence format

•Hook-flash detection timing configuration

•UDP Type of Service (ToS) configuration

•Hotline and warmline support (private line automatic ringdown)

•Debugging and diagnostic tools

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

1-8

OL-4008-01

 

 

Page 25 Page 27
Page 26
Image 26
Cisco Systems ATA 188 manual Cisco ATA H.323 Services
Page 25 Page 27

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.
Top Page Image Contents