3Com S330 manual Voice Compression Module Connections

34CHAPTER 2: INSTALLATION

■Voice compression module—a board consisting of one T1-DSX or E1 interface. It services traffic generated by your existing PBXs, channels, T1/E1 multiplexers, CSU/DSUs, and video conferencing devices. Install the Voice Compression module in slot 7 or slot 8. Figure 7 shows the VCM module connections.

Figure 7 Voice Compression Module Connections

PBX

T1-DSX/E1

■DS3/E3 module—a board consisting of one DS3 or E3 port. It is typically used for terminating/accessing the public or private ATM WAN services. However, depending on your local applications, you can also use the DS3/E3 module for taking local DS3 or E3 ATM traffic across the WAN. Install the DS3/E3 module in expansion slot 9. Figure 8 shows the DS3/E3 module connections.

Figure 8 DS3/E3 Module Connections

Network