Search results
Results from the WOW.Com Content Network
Coral Telecom Coral Telecom seems to be the biggest EPABX company in India now with products ranging from small analog PBX to large VoIP based switches. It has large clients in BSNL, Indian Railways, government departments, Public Sector units, Defence forces.
The systems marketed in North America as the 1A, 1A1, 1A2 Key System, and the 6A, are typical examples and were sold for many decades. The Western Electric 1A family of key telephone units (KTUs) was introduced in the late 1930s and remained in use until the 1950s. 1A equipment was primitive and required at least two KTUs per line; one for line ...
The modules are combined to form a complete switch or any of the modules can be added to your present Step-by-Step Systems.) EMS-2 (The EMS-2 RURAL SWITCH is a stored program control analog switch designed to be cost-effective in small exchanges.
An early form called Panel Call Indicator Pulsing used quaternary pulses to set up calls between a panel switch and a manual switchboard. Probably the most common form of communicating dialed digits between electromechanical switches was sending dial pulses , equivalent to a rotary dial 's pulsing, but sent over trunk circuits between switches.
The two phrases, "customer-premises equipment" and "customer-provided equipment", reflect the history of this equipment.Under the Bell System monopoly in the United States (post Communications Act of 1934), the Bell System owned the telephones, and one could not attach privately owned or supplied devices to the network, or to the station apparatus.
An example of a SIP message exchange between two users, Alice and Bob, to establish and end a direct media session. SIP is only involved in the signaling operations of a media communication session and is primarily used to set up and terminate voice or video calls. SIP can be used to establish two-party or multiparty sessions. It also allows ...
2NF—second normal form; 3GL—third-generation programming language; 3GPP—3rd Generation Partnership Project – 3G comms; 3GPP2—3rd Generation Partnership Project 2; 3NF—third normal form; 386—Intel 80386 processor; 486—Intel 80486 processor; 4B5BLF—4-bit 5-bit local fiber; 4GL—fourth-generation programming language; 4NF ...
A fax server at a central location, connected directly to public switched telephone network (PSTN) T- or E-carrier primary rate interface lines and using direct inward dial to identify the intended addressees can convert incoming faxes to electronic documents (such as TIFF or PDF) for web or e-mail delivery. The fax traffic never passes through ...