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基本結構

電話機是(shi)通過電信號雙向(xiang)傳輸話音的終端設備(bei)。

歷史(shi)上對電(dian)(dian)話(hua)(hua)機的改進和(he)發(fa)明包括：碳(tan)粉話(hua)(hua)筒、電(dian)(dian)話(hua)(hua)人工交(jiao)換板(ban)、撥號(hao)盤、自動電(dian)(dian)話(hua)(hua)交(jiao)換機、程控電(dian)(dian)話(hua)(hua)交(jiao)換機、雙音多(duo)頻(pin)撥號(hao)、語音數字(zi)采(cai)樣等(deng)。新技(ji)術包括：ISDN、DSL、模擬移動電(dian)(dian)話(hua)(hua)和(he)數字(zi)移動電(dian)(dian)話(hua)(hua)機等(deng)。

基本按鍵

電(dian)(dian)話電(dian)(dian)源線(xian)(xian)、電(dian)(dian)話線(xian)(xian)、收(shou)線(xian)(xian)開關、受(shou)話器、增音(yin)按鈕、送話器、本機(ji)號碼片、鈴(ling)聲及免(mian)(mian)提喇叭、記憶代碼鍵(jian)(jian)、記憶號碼片、數字按鍵(jian)(jian)、記憶取出鍵(jian)(jian)、記憶儲存鍵(jian)(jian)、重撥鍵(jian)(jian)、工作指示(shi)燈(deng)、免(mian)(mian)提鍵(jian)(jian)、R鍵(jian)(jian)、免(mian)(mian)提送話器、鈴(ling)聲調節(jie)開關、P/T開關、免(mian)(mian)提接(jie)收(shou)音(yin)量調節(jie)旋(xuan)鈕。

工作原理

電(dian)話(hua)通信(xin)(xin)是通過聲能(neng)與電(dian)能(neng)相互(hu)轉換(huan)、并利用“電(dian)”這(zhe)個媒(mei)介來傳輸語言(yan)的(de)一(yi)種通信(xin)(xin)技術。兩個用戶(hu)要(yao)進(jin)行(xing)通信(xin)(xin)，最簡單(dan)的(de)形式就是將兩部電(dian)話(hua)機用一(yi)對線路連接起來。

當發話(hua)(hua)者拿起電話(hua)(hua)機對著送話(hua)(hua)器講話(hua)(hua)時(shi)，聲帶的(de)振動激勵空氣振動，形成聲波(bo)。

聲波(bo)作用(yong)于送話(hua)器上，使(shi)之(zhi)產生電(dian)流(liu)，稱為(wei)話(hua)音電(dian)流(liu)。

話音電流沿(yan)著線路(lu)傳送到對方電話機的受話器內。

而受話器(qi)作(zuo)用與送話器(qi)剛(gang)好相反(fan)——把電流轉(zhuan)化為(wei)聲波，通過空氣(qi)傳至人的耳朵中(zhong)。

這(zhe)樣，就完成了最(zui)簡單的(de)通話過(guo)程。

發展歷史

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)是美國人A.G.貝爾于(yu)(yu)1876年(nian)發明(ming)的(de)。他用(yong)(yong)(yong)(yong)兩根導線連接兩個結構完全(quan)相(xiang)同(tong)、在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁鐵(tie)上裝有振(zhen)動膜(mo)片的(de)送話(hua)(hua)(hua)(hua)(hua)器(qi)和(he)受話(hua)(hua)(hua)(hua)(hua)器(qi)，首先實現(xian)兩端通話(hua)(hua)(hua)(hua)(hua)。但通話(hua)(hua)(hua)(hua)(hua)距離短、效(xiao)率(lv)低。1878年(nian)出(chu)(chu)現(xian)了炭精送話(hua)(hua)(hua)(hua)(hua)器(qi)，使(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)送話(hua)(hua)(hua)(hua)(hua)器(qi)效(xiao)率(lv)大大提(ti)高(gao)。受話(hua)(hua)(hua)(hua)(hua)器(qi)結構也(ye)有改(gai)進。最早的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)是磁石(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)，靠自(zi)(zi)備電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，用(yong)(yong)(yong)(yong)手(shou)搖發電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)發送呼叫信號(hao)(hao)(hao)。1880年(nian)出(chu)(chu)現(xian)共(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)，改(gai)由共(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)交(jiao)換機(ji)(ji)(ji)(ji)(ji)集(ji)中供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，省去手(shou)播發電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)和(he)干(gan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池。1891年(nian)出(chu)(chu)現(xian)了旋(xuan)轉(zhuan)撥號(hao)(hao)(hao)盤式(shi)自(zi)(zi)動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)，它可以發出(chu)(chu)直(zhi)流(liu)撥號(hao)(hao)(hao)脈沖(chong)(chong)，控(kong)制自(zi)(zi)動交(jiao)換機(ji)(ji)(ji)(ji)(ji)動作，選擇被叫用(yong)(yong)(yong)(yong)戶，自(zi)(zi)動完成交(jiao)換功能。從而(er)把電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)通信推(tui)向(xiang)一(yi)個新階段。到20世(shi)紀(ji)(ji)60年(nian)代(dai)末期(qi)出(chu)(chu)現(xian)了按(an)鍵(jian)式(shi)全(quan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)。除脈沖(chong)(chong)發號(hao)(hao)(hao)方式(shi)外，又出(chu)(chu)現(xian)了雙音多頻（DTMF）發號(hao)(hao)(hao)方式(shi)。隨著程控(kong)交(jiao)換機(ji)(ji)(ji)(ji)(ji)的(de)發展(zhan)(zhan)，雙音頻按(an)鍵(jian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)已逐步普及。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路正在(zai)向(xiang)集(ji)成化(hua)邁進，話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)專用(yong)(yong)(yong)(yong)集(ji)成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路已廣泛用(yong)(yong)(yong)(yong)于(yu)(yu)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路各(ge)組成部分。各(ge)種多功能電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)和(he)特種用(yong)(yong)(yong)(yong)途電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)也(ye)應運而(er)生。到20世(shi)紀(ji)(ji)90年(nian)代(dai)初，已有了將(jiang)撥號(hao)(hao)(hao)、通話(hua)(hua)(hua)(hua)(hua)、振(zhen)鈴三種功能集(ji)于(yu)(yu)一(yi)塊集(ji)成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路上的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)。隨著話(hua)(hua)(hua)(hua)(hua)音識別技術的(de)發展(zhan)(zhan)，直(zhi)接用(yong)(yong)(yong)(yong)話(hua)(hua)(hua)(hua)(hua)音“撥號(hao)(hao)(hao)”的(de)新型電(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)(hua)(hua)機(ji)(ji)(ji)(ji)(ji)也(ye)正在(zai)出(chu)(chu)現(xian)

最初的(de)電(dian)(dian)話(hua)(hua)機(ji)(ji)（終端）是由微(wei)型發(fa)電(dian)(dian)機(ji)(ji)和電(dian)(dian)池構成的(de)磁(ci)石式(shi)(shi)電(dian)(dian)話(hua)(hua)機(ji)(ji)，打電(dian)(dian)話(hua)(hua)時，使用者用手搖(yao)微(wei)型發(fa)電(dian)(dian)機(ji)(ji)發(fa)出電(dian)(dian)信號(hao)呼叫對(dui)方(fang)，對(dui)方(fang)啟機(ji)(ji)后構成通話(hua)(hua)回路(lu)。后來(lai)，1877年(nian)(nian)愛迪生(sheng)（T.E.Edison）發(fa)明了碳素(su)送話(hua)(hua)器(qi)和誘導線路(lu)后通話(hua)(hua)距(ju)離延長了。同一年(nian)(nian)又發(fa)明了共電(dian)(dian)式(shi)(shi)電(dian)(dian)話(hua)(hua)機(ji)(ji)。1891年(nian)(nian)終于發(fa)展到A.B.Strowger發(fa)明了自(zi)動式(shi)(shi)電(dian)(dian)話(hua)(hua)機(ji)(ji)。

基本功能

電(dian)話(hua)(hua)(hua)(hua)機(ji)設置在電(dian)話(hua)(hua)(hua)(hua)通(tong)信(xin)起點(dian)(dian)和終點(dian)(dian)的(de)(de)用(yong)戶側，是電(dian)話(hua)(hua)(hua)(hua)網的(de)(de)用(yong)戶終端(duan)設備。現(xian)代的(de)(de)電(dian)話(hua)(hua)(hua)(hua)機(ji)能夠(gou)方(fang)便地實(shi)現(xian)終端(duan)用(yong)戶之(zhi)間的(de)(de)呼(hu)叫和通(tong)話(hua)(hua)(hua)(hua)，是經過一(yi)(yi)百(bai)多年(nian)來許多人的(de)(de)研究和無數(shu)次(ci)的(de)(de)改進而形成(cheng)的(de)(de)。盡管它(ta)們的(de)(de)式樣(yang)千差萬別，但(dan)一(yi)(yi)般(ban)都(dou)有如下基本功(gong)能：

1、聲電互換

因為(wei)要進(jin)行快速的(de)、遠距離的(de)通信，不能直接傳送(song)聲(sheng)(sheng)音(yin)，而(er)必須先把(ba)聲(sheng)(sheng)音(yin)變成電(dian)信號(hao)（即以電(dian)作為(wei)載體），到對方后再把(ba)電(dian)信號(hao)還(huan)原成為(wei)聲(sheng)(sheng)音(yin)。

2、摘機識別

當主(zhu)叫方拿起電話(hua)機時(shi)，交換(huan)機應有(you)能知(zhi)道“有(you)人要打電話(hua)”的(de)功能，以便(bian)交換(huan)機做(zuo)好接續(xu)準備。

3、發送信號

自動電話(hua)(hua)機(ji)正(zheng)是通過發送(song)撥號信號來指揮(hui)電話(hua)(hua)交換機(ji)的工作(zuo)，并進而(er)建立兩個電話(hua)(hua)機(ji)之間的連接的。

4、響鈴

即在對方來電(dian)話時，電(dian)話機(ji)能(neng)以鈴聲告訴主(zhu)人：“有人來電(dian)話了。”

5、電接續

電話機(ji)中，實現這五大功能的部件依次是：送受話器、叉簧(huang)、撥號盤(pan)(pan)（或按鍵盤(pan)(pan)）、電話鈴和(he)電話回路。

主要分類

有線電話

電(dian)(dian)(dian)話(hua)(hua)機具有(you)將終端(duan)的(de)(de)(de)(de)(de)音(yin)(yin)(yin)(yin)波轉(zhuan)換(huan)為(wei)電(dian)(dian)(dian)子(zi)信號(hao)，通(tong)過電(dian)(dian)(dian)話(hua)(hua)線(xian)(xian)傳送(song)到遠(yuan)距離的(de)(de)(de)(de)(de)對(dui)(dui)(dui)方(fang)(fang)(fang)，同時(shi)將對(dui)(dui)(dui)方(fang)(fang)(fang)傳送(song)來的(de)(de)(de)(de)(de)電(dian)(dian)(dian)子(zi)信號(hao)再(zai)生為(wei)語(yu)音(yin)(yin)(yin)(yin)（音(yin)(yin)(yin)(yin)波），使其(qi)通(tong)話(hua)(hua)的(de)(de)(de)(de)(de)功能(neng)，以及發(fa)(fa)送(song)可從多(duo)個對(dui)(dui)(dui)方(fang)(fang)(fang)中選(xuan)擇的(de)(de)(de)(de)(de)信號(hao)（撥號(hao)脈(mo)沖），告知對(dui)(dui)(dui)方(fang)(fang)(fang)的(de)(de)(de)(de)(de)呼叫(jiao)音(yin)(yin)(yin)(yin)等功能(neng)。電(dian)(dian)(dian)話(hua)(hua)機由將語(yu)音(yin)(yin)(yin)(yin)轉(zhuan)換(huan)為(wei)電(dian)(dian)(dian)流(liu)發(fa)(fa)送(song)到電(dian)(dian)(dian)話(hua)(hua)線(xian)(xian)的(de)(de)(de)(de)(de)送(song)話(hua)(hua)機、將對(dui)(dui)(dui)方(fang)(fang)(fang)傳送(song)來的(de)(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)還原為(wei)語(yu)音(yin)(yin)(yin)(yin)的(de)(de)(de)(de)(de)受話(hua)(hua)機、呼叫(jiao)對(dui)(dui)(dui)方(fang)(fang)(fang)的(de)(de)(de)(de)(de)撥號(hao)或按(an)鈕、發(fa)(fa)送(song)呼叫(jiao)音(yin)(yin)(yin)(yin)的(de)(de)(de)(de)(de)鈴聲、將這些連(lian)接在(zai)電(dian)(dian)(dian)話(hua)(hua)線(xian)(xian)上(shang)執行其(qi)功能(neng)的(de)(de)(de)(de)(de)線(xian)(xian)路網等組成。送(song)話(hua)(hua)機內有(you)裝滿(man)碳素(su)顆粒的(de)(de)(de)(de)(de)小(xiao)箱子(zi)，其(qi)前(qian)方(fang)(fang)(fang)有(you)薄硬(ying)鋁合金振動(dong)板(ban)。振動(dong)板(ban)根據語(yu)音(yin)(yin)(yin)(yin)振動(dong)，振動(dong)碳素(su)顆粒，碳素(su)顆粒傳導電(dian)(dian)(dian)流(liu)，隨著顆粒的(de)(de)(de)(de)(de)接觸(chu)程度，電(dian)(dian)(dian)阻發(fa)(fa)生變化，生成語(yu)音(yin)(yin)(yin)(yin)電(dian)(dian)(dian)流(liu)。受話(hua)(hua)機接受對(dui)(dui)(dui)方(fang)(fang)(fang)的(de)(de)(de)(de)(de)語(yu)音(yin)(yin)(yin)(yin)電(dian)(dian)(dian)流(liu)后(hou)，在(zai)線(xian)(xian)圈(quan)上(shang)生成語(yu)音(yin)(yin)(yin)(yin)電(dian)(dian)(dian)流(liu)引起的(de)(de)(de)(de)(de)磁力，振動(dong)鐵振動(dong)板(ban)，發(fa)(fa)出聲音(yin)(yin)(yin)(yin)。

無線電話

無線環(huan)路(lu)-無繩電話

電話子母機

數字無繩電話

模擬無繩電話

移動電話手機

小靈(ling)通(tong)（無線電(dian)話）

智能電話

隨著IT技(ji)術的(de)(de)不斷的(de)(de)飛速發展，嵌入式終端設備的(de)(de)處(chu)理能(neng)力越(yue)(yue)來越(yue)(yue)強，21世紀初出現了一種帶(dai)個人數據助(zhu)理（PDA）的(de)(de)電(dian)話(hua)機“智能(neng)電(dian)話(hua)”。

智能(neng)(neng)電(dian)話(hua)除了(le)有(you)(you)完整(zheng)的(de)(de)固定(ding)電(dian)話(hua)功(gong)(gong)(gong)能(neng)(neng)外，通常還具(ju)有(you)(you)大容量(liang)的(de)(de)名片(pian)管理(li)功(gong)(gong)(gong)能(neng)(neng)、來(lai)去電(dian)管理(li)功(gong)(gong)(gong)能(neng)(neng)、防止電(dian)話(hua)騷(sao)擾（電(dian)話(hua)防火(huo)墻）功(gong)(gong)(gong)能(neng)(neng)、企業集團電(dian)話(hua)名片(pian)（內部(bu)名片(pian)）管理(li)功(gong)(gong)(gong)能(neng)(neng)，以及(ji)輔助辦公的(de)(de)許多功(gong)(gong)(gong)能(neng)(neng)，比(bi)如：日(ri)程安排、便(bian)箋、日(ri)歷、計算器等功(gong)(gong)(gong)能(neng)(neng)。早期(qi)的(de)(de)智能(neng)(neng)電(dian)話(hua)通過(guo)撥號上網，具(ju)有(you)(you)一定(ding)的(de)(de)信息(xi)交(jiao)換(huan)能(neng)(neng)力(li)，實現(xian)了(le)發送短(duan)信、接收文字信息(xi)的(de)(de)功(gong)(gong)(gong)能(neng)(neng)。隨(sui)著固網智能(neng)(neng)電(dian)話(hua)在中(zhong)國(guo)近十(shi)年的(de)(de)發展，其處理(li)能(neng)(neng)力(li)加強，逐漸地(di)增加了(le)智能(neng)(neng)手機(ji)（Smartphone）具(ju)有(you)(you)的(de)(de)功(gong)(gong)(gong)能(neng)(neng)。

智(zhi)能電(dian)話已有(you)通過因特網(wang)上網(wang)的(de)(de)能力及(ji)較強的(de)(de)多(duo)媒的(de)(de)體功(gong)能。可(ke)以(yi)進行網(wang)絡瀏覽、音視頻的(de)(de)播(bo)放、具有(you)電(dian)子書、電(dian)子相框等功(gong)能。同時(shi)智(zhi)能電(dian)話在輔(fu)助辦公、輔(fu)助營銷、娛樂等方面(mian)的(de)(de)功(gong)能也有(you)了(le)大大的(de)(de)加強。在對傳統固定電(dian)話顛覆的(de)(de)基礎上，實(shi)現了(le)更多(duo)的(de)(de)商(shang)務功(gong)能和PDA功(gong)能。

使用環境

使用條件

環(huan)境溫度：-10℃~40℃

相對(dui)濕度：45%~95%

大氣(qi)壓(ya)力：860~1060mbar

環(huan)境噪聲：≤60dB(A)

技術性能

1、工作頻率(lv)：300~3400HZ

2、脈沖通斷比：1.6±0.2∶1

3、雙音頻撥號頻偏(pian)：≤±1.5%

4、雙音頻(pin)(pin)信號電(dian)平：①低頻(pin)(pin)群(qun)：-9±3dB；②高頻(pin)(pin)群(qun)：-7±3dB；③頻(pin)(pin)率組合中高頻(pin)(pin)分(fen)量比低頻(pin)(pin)分(fen)量高2±1dB

5、振鈴聲級：≥70dB(A)

6、電聲性能：

①在0公(gong)(gong)里(li)時(shi)，客觀(guan)發送參考(kao)當(dang)(dang)量(liang)≥+3；在3公(gong)(gong)里(li)時(shi)，客觀(guan)發送參考(kao)當(dang)(dang)量(liang)≤+15；在5公(gong)(gong)里(li)時(shi)，客觀(guan)發送參考(kao)當(dang)(dang)量(liang)≤+15。

②在0公里時(shi)(shi)，客(ke)觀(guan)接收參考當(dang)量(liang)≥－5；在3公里時(shi)(shi)，客(ke)觀(guan)接收參考當(dang)量(liang)≤+2；在5公里時(shi)(shi)，客(ke)觀(guan)接收摻考當(dang)量(liang)≤+2。

③在0公(gong)里(li)時(shi)，客(ke)(ke)觀(guan)側(ce)(ce)音(yin)參(can)考當(dang)(dang)量≥+3；在3公(gong)里(li)時(shi)，客(ke)(ke)觀(guan)側(ce)(ce)音(yin)參(can)考當(dang)(dang)量≥+10；在5公(gong)里(li)時(shi)，客(ke)(ke)觀(guan)側(ce)(ce)音(yin)參(can)考當(dang)(dang)量≥+10。

未來發展

高(gao)科技電(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)機(ji)的(de)(de)發(fa)展都(dou)是(shi)隨著(zhu)無線通信(xin)(xin)的(de)(de)發(fa)達而形成的(de)(de)。電(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)機(ji)的(de)(de)發(fa)展趨(qu)勢經(jing)過Digital電(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)機(ji)和(he)PCS后發(fa)展到可(ke)(ke)以用衛星(xing)通信(xin)(xin)的(de)(de)IMT-200服務。IMT-200支持信(xin)(xin)息(xi)的(de)(de)高(gao)速傳送，Packet，畫像等(deng)多媒體(ti)的(de)(de)服務，將來(lai)(lai)世界各個地方(fang)都(dou)可(ke)(ke)以使用所有(you)聲音電(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)，電(dian)(dian)(dian)(dian)(dian)報用戶直(zhi)通電(dian)(dian)(dian)(dian)(dian)路，傳呼和(he)電(dian)(dian)(dian)(dian)(dian)子郵(you)件(jian)；隨著(zhu)電(dian)(dian)(dian)(dian)(dian)子郵(you)件(jian)的(de)(de)普(pu)及，網(wang)(wang)絡也日益化，網(wang)(wang)絡電(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)已是(shi)不(bu)可(ke)(ke)阻擋的(de)(de)發(fa)展趨(qu)勢。現有(you)的(de)(de)固(gu)定電(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)，已經(jing)不(bu)能提供人們的(de)(de)需要(yao)了。未來(lai)(lai)的(de)(de)固(gu)定電(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)講(jiang)裝備攝像頭，帶(dai)有(you)色彩(cai)的(de)(de)液晶顯示器，我們在接(jie)固(gu)定電(dian)(dian)(dian)(dian)(dian)話(hua)(hua)(hua)的(de)(de)時候，都(dou)能夠看到雙(shuang)方(fang)。