V.21

(redirected from V21)

V.21

(protocol, standard)
An ITU-T modem protocol for 300 bps two-wire full-duplex communications using Frequency Shift Keying modulation.

All modern modems support both V.21 and the close variant, Bell 103.

V.21

An ITU standard (1964) for asynchronous 0-300 bps full-duplex analog modems for use on dial-up lines. It uses FSK modulation.
References in periodicals archive ?
The works includes the following building services systems: R11 Foul Drainage Above Ground S10 Cold Water S11 Hot Water S41 Fuel Oil/Distribution T10 Boilers T14 Heat Pumps V20 LV Distribution V21 General Lighting V22 General Power W60 Controls/Monitoring The works is to be carried out at: Avon Fire & Rescue Service Lansdown Road Lansdown Bath B&NES BA1 9DB
The genotypes V7, V15, V33, V82, V89 and V-A1 were found to be drought sensitive as the variety Yakutiye, while the genotypes V21, V62, V69, V71, V86, V95 and T7 were found to be drought tolerant as the variety Zulbiye.
We sought to compare DxCG to the CMS V21 system (hereafter referred to as V21), which was developed to adjust capitated payments for Medicare Advantage plans (Pope et al.
O fator 1 agrupa, de forma decrescente, as variaveis V12, V15, V5, V21, V8, V22, e denominado "satisfacao com o salario".
035 cc Liver Mean dose <18 Gy V21 Gy <700 cc SBRT: stereotactic body radiotherapy; RCC: renal cell carcinoma; Gy: Gray; Dmax: maximum dose.
Barbara 13,2 KV) Santa V12 (Candelaria 34,5 KV) ZONA San Marcos Barbara V13 (Codazzi 13,2 KV) SUR 115 115 V14 (Jamundi 34,5 KV) V15 (Jamundi 13,2 KV) V16 (Palmaseca 34,5 KV) AREA 2 V17 (Palmaseca 13,2 KV) V18 (Termo Yumbo 34,5 KV) V19 (Guachal 34,5 KV) V20 (Juanchito 34,5 KV) ZONA San Marcos Pance 115 V21 (Juanchito 13,2 KV) CALI 115 V22 (Melendez 34,5 KV) V23 (Melendez 13,2 KV) V24 (Chipichape 34,5 KV) V25 (Chipichape 13,2 KV) AREA 3 ZONA Bajo Bajo V26 (Tabor 13,2 KV) V27 B/TURA Anchicaya Anchicaya (Pailon 13,2 KV) Tabla 2.
A striking recent example of the latter is the V21 Collective that published its ten-thesis manifesto criticizing (in the most vitriolic of terms) the current state of Victorian Studies.
Anotando que las preguntas V3, V4, V5, V6, V8, V10, V11, V18, V20 y V21 tenian las siguientes alternativas de respuesta: siempre, casi siempre, a veces, nunca; mientras que para las demas era si o no.
V21 A certified food service manager must be present in all establishments at which potentially hazardous food is prepared or served.
Tambien se eliminan los items de la dimension Motivo de Exposicion Pasatiempo: V3 "Veo television cuando no hay nada mejor que hacer", V22 "Me gusta ver television para pasar el tiempo, sobre todo cuando estoy aburrido", V21 "Muchas veces veo television simplemente porque esta encendida", V2 "Veo television cuando no tengo con quien hablar", V20 "Veo television por costumbre o habito", V6 "Veo television para alejarme de mis preocupaciones diarias".
Standard features: V21 active-matrix controller and Moldyzer part-quality analyzer; wide platens, greater daylight opening, longer clamp and ejector strokes; optical encoders for injection and clamp position accuracy to 0.