Call Command Behavior | Cisco Systems ATA 188 guide

Chapter 6 Call Commands

Call Command Behavior

Table 6-4 Call Command Behavior (continued)

Cisco ATA State and its Definition	Summary of Commands (Input Sequence and Actions)

CALLING_HOLDING: Cisco ATA is	•	R—Cancel the call and revert to PREDIAL_HOLDING state.
waiting for a second far end to respond	•	ONH—Cancel the call and transfer the waiting party to the callee, and revert
while placing a connected call on hold	•
while placing a connected call on hold		back to PREDIAL state.
		back to PREDIAL state.

WAITHOOK_HOLDING: The AFE	•	R—Retrieve the WFE and go to CONNECTED state.
hangs-up to disconnect the current call
while there is a WFE being put on hold

AITHOOK_ALERTING: The AFE hangs	•	R—Stop CWT, answer the waiting call, and go to CONNECTED state.
up while a waiting call alerts	•	WFE: Cancel the call; stop CWT, go to WAITHOOK state.
	•	WFE: Cancel the call; stop CWT, go to WAITHOOK state.
	• ONH—Go to IDLE state (in which Cisco ATA automatically starts ringing
		the phone, and goes to RINGING state).

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

	OL-4008-01	6-11

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.