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            您所在的位置：首頁 > 行業資訊 > 評論
            
    
            
        
            
            
            
                
                
            目前在通信方面，在這么通信工程的時候，遇到不少企業在租借E1（2M）線路利用PCM設備傳輸語音電話、音頻等業務?？赡艽蟛糠制髽I只對E1線路帶寬了解，而E1線路的具體知識點還是不太了解。1、一條E1是2.048M的鏈路，用PCM編碼。2、一個E1的幀長為256個bit,分為32個時隙，一…
            
                
                
                
            
                    
            
                    
            
                        
            
                            
            
                            
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