方法一：
两台26XM以上的机器，两块Vwic-1MFT-G703用BNC线对接上（2MFT用一口就行），两口分别设一个IP地址，施行对ping！这种方法的精确度比较高。
 
方法二：
Vwic-1MFT-G703 测试方法
 
   (一) 打硬环测试，判断G703模块硬件是否正常
     测试所需工具、设备、线缆:
   
           1、两条 RJ45-2 BNC
           2、一个BNC直通头
           3、NM-2W或其它支持G703的NM模块
         
     测试平台:2611XM以上

     测试准备工作:
                  (1) 将G703模块插入NM模块中
                  (2) 将两条 RJ45-2 BNC线缆用BNC直通头对接
                  (3) show diag 查看模块，是否存在。          
         
    准备工作完毕后，表现的正常现象: 
                 (1) 这时G703模块的Loop指示灯变绿    
                 (2) show controller e1，查看E1口是否UP，
                     没有UP，就说明模块、槽、IOS
                    
-------------------------------------------------
                 7026#show controller e1
E1 5/1 is up.     ------------插入G703模块后，自动生成的，槽5第1口。
Applique type is Channelized E1 - balanced
No alarms detected.
Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.
International Bit: 1, National Bits: 11111
Data in current interval (648 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 24 hours)
0 Line Code Violations, 0 Path Code Violations,
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
 --------------------打硬环测试完毕--------------------------------
 
  (二) 高压数据包测试,判断G703模块能够在大流量的情况下，不产生丢包。
     
        (1) 测试所需设备及工具
            
             选配1:
                     型号               数量
                VWIC-1MFT-G703           2
                NM-2W(或支持G703模块)    1
                               
             选配2:
                     型号               数量
                VWIC-2MFT-G703           1
                NM-2W(或支持G703模块)    1
       
         (2)准备工作
           
             1、将两块Vwic-1MFT-G703的RJ45口，使用RJ45-2 BNC 线，
                将收与发两条BNC反接在一起.
                ------正常状态，两模块,亮双绿灯
               -------对于1MFT的G703模块，采用2块，而对于2MFT-G703只需一块就够了
             2、show controller e1
                7026#show controller e1
                E1 5/1 is up.-----插入G703模块后，自动生成的，槽5第1口。
                             -----物理部分，连接成功
             3、简单基本配置
                   (1)  controller e1 5/1
                        channel-group 1 timeslots 1-32
                   (2)show ip int bri
                       查看是否存在:serial5/1:0、Serial5/1:1 
                       ----是以serial开头的，这两个口就是对应G703模块的网口
                   (3) int serial5/1:0
                       ip address 192.168.8.1 255.255.255.0
                       no shutdown
                      
                      int serial 5/1:1
                       ip address 192.168.8.2 255.255.255.0
                       no shutdown
                   (4)show ip int bri 查看e1两个口，第二、三层，是否UP
             4、高压测试:
           Router#ping
Protocol [ip]:
Target IP address: 192.168.8.2
Repeat count [5]: 1000000  --------数据包数量可自订   
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface: 192.168.8.1
Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 20, 100-byte ICMP Echos to 192.168.8.2, timeout is 2 seconds:
Packet sent with a source address of 192.168.8.1
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (1000000/1000000), round-trip min/avg/max = 44/60/96 ms 
  1000000/1000000--------这表示，100%测试成功，未出现丢包现象      

--------------------G703所有系列模块，测试完毕-------------------------------