3Com 3C63311 Reference Guide - Page 196

184 CHAPTER 5: PATHBUILDER S330 DIAGNOSTICS AND PERFORMANCE STATISTICS The following prompt appears: Enter Channel (1-8): 3 Enter the number of the channel for which you want to set a loopback to open the VCM Channel Loopback menu for that channel. Figure 144 shows the VCM T1-DSX Channel Loopback menu. The VCM E1 Channel Loopback menu is the same. Figure 144 VCM Channel Loopback Menu 4 Select [1] Set Loopback. A prompt appears, listing the available types of channel loopback. 5 Enter the appropriate number to select one of the following types of channel loopbacks (or no loopback): PCM Loopback--Loops digital receive to transmit toward the T1 port. PCM Packet Loopback--Loops coder output to coder input toward the T1 port, using the DSP channel PCM packet loopback. Network Packet Loopback--Loops coder input to coder output toward the ATM network, using the DSP channel network packet loopback. 6 Select [2] Apply Setting to Channel(s). The following prompt appears: Enter Channel (1-8): 7 Enter the number(s) of the channel(s) to which you want to apply the settings to set the specified loopback for those channels. You can enter a single channel, a range of channels (for example: 4-6), or a list of channels separated by commas (for example: 4,5,6).