analog telephone

The original telephone technology, which was introduced in the late 1800s. Analog phones convert sound (air vibrations) into analogous electrical frequencies. Many homes and small offices still use analog phones, where they are likely to remain for many years. The local loop that connects homes and offices to the telephone companies is mostly analog as well (see local loop).

From Analog to Digital
In contrast, multi-line office phones that connect to an in-house PBX, as well as most cordless phone systems, convert voice to digital (see cordless phone). In addition, a huge amount of voice traffic today has become Internet based, and the phones that connect to the Internet convert voice to IP packets and vice versa (see VoIP). See analog, analog telephone adapter, AMPS, key system, PBX and DECT.

A Very Early Analog Telephone

The first telephones were analog such as this Ericsson model circa 1885. This "skeletal phone" (you can see through it) contained a hand-cranked electrical generator that rang the switchboard operator in the central office.

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References in periodicals archive

The SmartNode 200 Analog Telephone Adapter and VOIP Gateway series offers combinations of one to four analog telephonyports, allowing the connection of analog phones, facsimile machines, intercoms and other older equipment toSIP trunk, unified communications (UC) and hosted all-IP telephony services, the company announced in a news release.

Md. telephone equipment maker plans analog-digital adapter

The HT813 offers one FXS port for integration of analog telephones and fax machines with VoIP services, one FXO port for call termination and interfacing with traditional PSTN networks, and an integrated NAT router, the company said.

Grandstream releases hybrid ATA

Unlike analog telephone service, which requires that customers add more than one line to make multiple calls at a single time, VoIP allows for more than one call on a broadband connection.

ITP VoIP, a Digital Phone Company, Thrives in Rapidly Growing Internet Phone Industry, Ranked "Industry of the Decade" by IBISWorld

Using personnel from its reserve unit, ASO developed a workable alternative communications system for logistics data by creating a concept that utilized conventional analog telephone circuits, with data modems added at each end.

Happy anniversary ... SALTS turns 20!

- Cost savings with Least Cost Routing (LCR) - For calls between landline and GSM or between different GSM networks, which can be very expensive, the FreePBX dial plan can be configured with a prefix that, when dialed, will route calls placed from a SIP or analog telephone over a GSM trunk.

PIKA SHIPS GSM MODULE FOR WARP APPLIANCE

The SmartNode 4400 preserves investments in analog telephone equipment for enterprises and call centers in the ISDN world by connecting legacy PBX and phone equipment to a VoIP network.

PATTON'S VOIP GATEWAY ROUTER CUTS EXPENSES FOR CARRIERS

More functional and interoperable than analog telephone adapters, VoIP adapters pass VoIP features through to the handset, while enhanced features requiring a larger screen are accessed through a Web browser.

Make IP PBX part of the solution

The SPH-200 connects to any existing analog telephone jack and a 110vac outlet for a plug-in power supply.

CISCOR keeps tabs on emergencies

-Employing IP hardphones, analog telephone adapters, and softphones

O'Reilly releases 'VoIP hacks"

The new offering integrates a VoIP analog telephone adapter (ATA) and a wireless gateway in a single device, packaged with an AC adapter and RJ-11, RJ-45 and USB cables.

SMC Networks unveils Wireless Travel Voice Gateway

Viseon's mission is to work with carriers to enhance the consumer telephone experience by positioning VoIP as a premium service versus Plain Old Telephone Service (POTS), and ultimately replacing the analog telephone by bringing digital telephony quality to the broader public.

VISEONMEDIA SIGNS PARAMOUNT PICTURES FOR PILOT PROGRAM