Additional H.323 Services, IPDialPlan

Chapter 4 Basic and Additional H.323 Services

Additional H.323 Services

Related Configuration Parameters

•IPDialPlan, page 5-36

•DialPlan, page 5-37

Setting the Audio Codecs

You can configure the following codec-related settings:

•Low-bit-rate codec—When operating with a low-bit-rate codec, the Cisco ATA can support either two G.723.1 connections or one G.729 connection. You must statically configure the selection of G.723.1 or G.729 by using the LBRCodec parameter.

When G.723.1 is the low-bit-rate codec, each FXS port is allocated one G.723.1 connection. When G.729 is used, only one FXS port can use G.729. The G.729 resource is allocated in a dynamic manner. When a call begins, the FXS port requests and takes an available G.729 resource. The Cisco ATA releases this resource when the call is completed.

Use Bit 1 of the AudioMode parameter to disable and enable the use of the low-bit-rate codec.

Related Configuration Parameters

–LBRCodec, page 5-19

–AudioMode, page 5-20

•Voice codec—You can configure the preferred voice codec for transmitting and receiving voice data by using the TxCodec and RxCodec parameters, respectively. Cisco recommends that you configure the same voice codec for TxCodec and RxCodec.

Related Configuration Parameters

–TxCodec, page 5-22

–RxCodec, page 5-21

•Silence suppression—You can configure silence suppression for G.711/G.723.1/G.729 by using the ConnectMode parameter (Bit 0 for the Phone 1 port and Bit 16 for the Phone 2 port).

Related Configuration Parameter

ConnectMode, page 5-28

Additional H.323 Services

This section describes additional H.323 services and, where applicable, provides configuration information and cross references to the parameters for configuring these services, described in alphabetical order:

•Configuring Audio Packet Settings, page 4-8

•Configuring Billable Features, page 4-8

•Configuring the Call Waiting Permanent Default Setting, page 4-9

•Configuring the Cisco ATA Refresh Interval, page 4-9

•Configuring Hook Flash Timing, page 4-9

•Configuring the Mixing of Call Waiting Tone and Audio, page 4-9

•Configuring Network Ringback Tone, page 4-9

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

	OL-4008-01	4-7

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.