GL-2

Glossary

compression

CoS

The running of a data set through an algorithm that reduces the space required to store or the bandwidth required to transmit the data set. Compare with companding and expansion.

Class of service. An indication of how an upper-layer protocol requires a lower-layer protocol to treat its messages. In SNA subarea routing, CoS definitions are used by subarea nodes to determine the optimal route to establish a given session. A CoS definition comprises a virtual route number and a transmission priority field.

DHCP	Dynamic Host Configuration Protocol. Provides a mechanism for allocating IP addresses dynamically
	so that addresses can be reused when hosts no longer need them.
dial peer	An addressable call endpoint. In Voice over IP (VoIP), there are two types of dial peers: POTS and
	VoIP.
DNS	Domain Name System. System used on the Internet for translating names of network nodes into
	addresses.
DSP	digital signal processor. A DSP segments the voice signal into frames and stores them in voice packets.
DTMF	dual tone multifrequency. Tones generated when a button is pressed on a telephone, primarily used in
	the U.S. and Canada.

E.164	The international public telecommunications numbering plan. A standard set by the ITU-T which
	addresses telephone numbers.
endpoint	A SIP terminal or gateway. An endpoint can call and be called. It generates and/or terminates the
	information stream.
expansion	The process of running a compressed data set through an algorithm that restores the data set to its
	original size. Compare with companding and compression.

firewall	Router or access server, or several routers or access servers, designated as a buffer between any
	connected public networks and a private network. A firewall router uses access lists and other methods
	to ensure the security of the private network.
FoIP	Fax over IP
FQDN	Fully Qualified Domain (FQDN) format “mydomain.com” or “company.mydomain.com.”
FSK	Frequency shift key.

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

	GL-2	OL-4008-01

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.

Cisco Systems ATA 188 manual GL-2

Models: ATA 188

OL-4008-01

ATA 188 specifications