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In network topology, a cable modem is a network bridge that conforms to IEEE 802.1D for Ethernet networking (with some modifications). The cable modem bridges Ethernet frames between a customer LAN and the coax network. Technically, it is a modem because it must modulate data to transmit it over the cable network, and it must demodulate data ...
Canopy – A line-of-sight wireless technology, primarily used by ISPs to provide broadband internet; MotoMESH – A mobile wireless broadband product providing proprietary "Mesh-Enabled Architecture" and standards-based 802.11 network access in both the unlicensed 2.4 GHz band and the licensed 4.9 GHz public-safety band
This results in a response from the modem of CONNECT or VCON. (Modems using the "plus" command set usually respond CONNECT, while those using the "hash" set respond VCON, which stands for voice connect.) From then on, the modem interprets any data sent from the computer as wave audio data, using the codec selected by the AT+VSM or AT#VSM command.
Using such an ATA, it is possible to connect a conventional telephone to a remote VoIP server. The ATA communicates with the server using a protocol such as H.323 , SIP , MGCP , SCCP or IAX , and encodes and decodes the voice signal using a voice codec such as G.711 , G.729 , GSM, or iLBC .
Cable modem termination system A cable modem termination system ( CMTS , also called a CMTS Edge Router ) [ 1 ] is a piece of equipment, typically located in a cable company's headend or hubsite, which is used to provide data services, such as cable Internet or Voice over IP , to cable subscribers.
On the receiving end is another modem that re-converts the transmission format back into digital data packets. [5] This allows network bridging using telephone, cable, optical, and radio connection methods. The modem also provides handshake protocols, so that the devices on each end of the connection are able to recognize each other. [6]