Chapter 4 Cisco ATA-Supported MGCP Services

Complete Reference Table of all Cisco ATA MGCP Services

Syntax Type 2

RSIP *@ip_address MGCPVersion

RM: restart

Upon a successful response from the Call Agent to the RSIP command, the Cisco ATA places each MGCP endpoint into the connected state and resumes normal operation. Destinations of subsequent Cisco ATA commands to the Call Agent are set according to the NotifyEntity header. Call Agent responses are always sent to the source address of the origin of the command.

If the Cisco ATA does not receive a Call Agent response to a subsequent command when the maximum number of retransmissions of the command times out, the Cisco ATA puts both Call Agent endpoints back into the disconnected state. The Cisco ATA then sends RSIP messages to the destinations indicated in the NotifyEntity header. This is shown in the following example:

RSIP Message for Disconnect State

RSIP *@ip_address MGCPVersion

RM: disconnected

Complete Reference Table of all Cisco ATA MGCP Services

Table 4-1is a reference table that lists all configurable features for the Cisco ATA (using MGCP), and includes links to the detailed descriptions of the parameters used for configuring these features.

Table 4-1 Configurable Features and Related Parameters for MGCP

Configurable Feature

Related Parameter

 

 

Caller ID format

CallerIdMethod, page 5-21

 

 

Call waiting

SigTimer, page 5-26

 

 

Cisco Discovery Protocol—disabling

OpFlags, page 5-27

 

 

Codec—Specify default preferred codec

PrfCodec, page 5-15

 

 

Codec names to use in LocalConnectionOption

CodecName, page 5-19

command

 

 

 

Configuration-update interval

CfgInterval, page 5-5

 

 

DHCP usage—disabling

DHCP, page 5-8

 

 

Debug messages—configuring host

NPrintf, page 5-40

 

 

DNS name resolution

OpFlags, page 5-27

 

 

Domain name server

DNS1IP, page 5-10

 

 

Domain name of endpoint ID

Domain, page 5-18

 

 

Dual Tone Multi-frequency (DTMF) method

AudioMode, page 5-20

 

 

Encryption

EncryptKey, page 5-6,EncryptKeyEx, page 5-7

 

 

Endpoint-identifier specification

EPID0orSID0 and EPID1orSID1, page 5-14

 

(Also see the “Endpoints and Connections”

 

section on page 4-3.)

 

 

Fax CED tone detection

AudioMode, page 5-20

Fax CNG tone detection

 

 

 

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for MGCP (version 3.0)

 

OL-4803-01

4-5

 

 

 

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Cisco Systems ATA 188, ATA 186 Complete Reference Table of all Cisco ATA Mgcp Services, Rsip Message for Disconnect State
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ATA 188, ATA 186 specifications

The Cisco Systems ATA 186, or Analog Telephone Adapter, revolutionized the way traditional telephony interacted with Voice over Internet Protocol (VoIP) systems. Designed primarily for home and small office use, the ATA 186 allows users to connect standard analog phones and fax machines to a network, enabling them to take advantage of the benefits of VoIP technology.

One of the defining features of the ATA 186 is its dual port architecture. It includes two FXS ports, allowing users to connect up to two analog telephones. This functionality means that multiple devices can leverage VoIP services simultaneously without the need for separate adapters for each phone. The flexibility of the ATA 186 helps streamline the user experience, facilitating voice communication over an IP network while ensuring users can still use their existing phone equipment.

The ATA 186 employs various technologies to maintain high-quality voice calls. It supports standard voice codecs such as G.711 and G.729, which ensure efficient bandwidth usage while preserving call clarity. The adaptive jitter buffer technology further enhances call quality, compensating for network variations and minimizing latency, which is crucial for clear and uninterrupted conversations.

Additionally, the ATA 186 provides users with advanced calling features that were traditionally available only on PBX systems. These features include caller ID, call waiting, and voicemail functionality, integrating seamlessly with typical telephony services. The device also supports T.38 fax relay, allowing users to send and receive faxes over the internet, thus addressing the needs of environments where fax communication remains essential.

The security of VoIP conversations is also a priority for the ATA 186. It employs encryption protocols such as Secure Real-time Transport Protocol (SRTP) and Transport Layer Security (TLS), ensuring that voice data is securely transmitted across the network. This focus on security helps protect sensitive information transmitted during calls.

Installation and configuration of the ATA 186 is streamlined, with an intuitive web-based interface that simplifies the setup process. This accessibility makes it suitable for users with varying levels of technical expertise, as frequently required adjustments, such as network configurations and firmware updates, can be easily managed.

In conclusion, the Cisco Systems ATA 186 stands out as a versatile and robust solution for users looking to integrate analog phones into a VoIP environment. With its dual port capabilities, high-quality voice codecs, advanced call features, and security measures, it offers a compelling choice for both residential and commercial users seeking seamless telephony integration. As technology evolves, devices like the ATA 186 remain cornerstones in bridging traditional telephony with modern communication systems.
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