電話線是給電話用的，由銅芯線構成，芯數可決定可接電話分機的數量，常見的規格有二芯、四芯。家庭裝修中用二芯的一般就夠了，不過如果還需要連接傳真機或者電腦撥號上網，最好選用四芯電(dian)話線。電話線可以用網線來代替，現在就有一些家庭的電話是通過網線連接的。

2、電視(shi)線(xian)

用(yong)于(yu)(yu)傳(chuan)(chuan)輸電(dian)(dian)(dian)(dian)(dian)視(shi)(shi)信(xin)(xin)號的(de)線目前主(zhu)要(yao)有(you)(you)有(you)(you)線電(dian)(dian)(dian)(dian)(dian)視(shi)(shi)同(tong)軸電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)和數(shu)字(zi)電(dian)(dian)(dian)(dian)(dian)視(shi)(shi)同(tong)軸電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)兩種(zhong)，有(you)(you)線電(dian)(dian)(dian)(dian)(dian)視(shi)(shi)同(tong)軸電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)采用(yong)雙(shuang)屏(ping)蔽，用(yong)于(yu)(yu)傳(chuan)(chuan)輸數(shu)字(zi)電(dian)(dian)(dian)(dian)(dian)視(shi)(shi)信(xin)(xin)號時會有(you)(you)一(yi)定的(de)損耗(hao);數(shu)字(zi)電(dian)(dian)(dian)(dian)(dian)視(shi)(shi)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)采用(yong)的(de)是四屏(ping)蔽電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)，既能(neng)傳(chuan)(chuan)輸數(shu)字(zi)電(dian)(dian)(dian)(dian)(dian)視(shi)(shi)信(xin)(xin)號，也能(neng)夠傳(chuan)(chuan)輸有(you)(you)線電(dian)(dian)(dian)(dian)(dian)視(shi)(shi)信(xin)(xin)號。在抗干擾性方面，四屏(ping)蔽電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)優于(yu)(yu)雙(shuang)屏(ping)蔽電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)，新(xin)居裝修建議采用(yong)數(shu)字(zi)電(dian)(dian)(dian)(dian)(dian)視(shi)(shi)同(tong)軸電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)。

3、網線

網(wang)線主要有雙絞(jiao)線、光纜兩(liang)種。

雙絞線(xian)(xian)(xian)：是由許多對線(xian)(xian)(xian)組成的數據傳(chuan)輸(shu)線(xian)(xian)(xian)，有(you)STP和UTP兩種(zhong)，STP的雙絞線(xian)(xian)(xian)內(nei)有(you)一層金(jin)屬隔離膜(mo)，在數據傳(chuan)輸(shu)時可減少(shao)電(dian)磁干擾(rao)，所以(yi)它(ta)的穩定性(xing)較高;常用的是UTP，網線(xian)(xian)(xian)沒有(you)金(jin)屬膜(mo)，所以(yi)穩定性(xing)較差，但它(ta)的優勢就(jiu)是價(jia)格便宜。

光纜：是目前最先進的網線，由許多根細如發絲的玻璃纖維外加絕緣套組成。由于靠光波傳送，它的特點就是抗電磁干擾性極好，保密性強，速度快，傳輸容量大等。

兩(liang)種不同的線的特性和價格(ge)都有差異，在(zai)選擇(ze)的時候，主要(yao)根據(ju)性能和價格(ge)來選擇(ze)。

4、影音線

用于實現音樂、視頻的傳輸的線路，主要有音響線、音頻線和音視頻線。音響線通俗的叫法是喇叭線，主要用于客廳里家庭影院中功率放大器和音箱之間的連接;音頻線，用于把客廳里家庭影院中激光CD機、DVD等的輸出信號，送到背景音樂功率放大器的信號輸入端子的連接;音視頻線主要用于家庭視聽系統的應用。(編輯：劉中層）