US Robotics COURIER Manuale Utente Scaricare il pdf (Pagina 296)

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101

U.S. Robotics I-modem Command Reference

Glossary • Page G-38

Service ProÞle IdentiÞer (SPID)

A unique number, similar to an ordinary 10-digit telephone number but with up to four

digits appended, that is assigned to each device that connects to the ISDN. A SPID identi-

Þes the services to which you have subscribed and is required to be set correctly at your

device. SPIDs apply only in North America.

software ßow control

A form of ßow control that uses XON and XOFF characters to start and stop the ßow of

data.

start bit

The signaling bit attached to the beginning of each character before characters are trans-

mitted during asynchronous transmission

stop bit

The signaling bit attached to the end of each character before characters are transmitted

during asynchronous transmission

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