3Com S330 manual Channels, Enter the number of the channel you want to configure

Configuring the Voice Compression Module 129

Figure 98 CBR Card Configuration Menu

4Select [1] Set Admin Status and enter 2 to put the CBR card in service or 1 to take it out of service.

Configuring the Voice The optional Voice Compression module (VCM) consists of one T1/E1 interface Compression Module which you connect to a PBX trunk. The T1/E1 interface’s 24/31 DS0 channels can

carry individual voice, fax, modem, or data connections—or you can bundle multiple DS0s to provide connections for high-rate applications such as video conference or multiple-link PPP. For CCS, a DS0 is used as an ISDN D-channel for carrying signal messages.

Configuring the VCM involves the following tasks:

■Configuring the channels

■Configuring the T1/E1 port

■Configuring the VCM card

The following subsections describe these tasks. For details about configuring virtual circuits for the VCM, see “Configuring Virtual Circuits” later in this chapter.

Configuring VCM DS0 To configure VCM DS0 channels, follow these steps:

Channels

1From the VCM Configuration menu, shown earlier in Figure 100, select [1] Channel Configuration.

The following prompt appears:

Enter Channel (1-8):

2Enter the number of the channel you want to configure.

After you enter the channel number, the VCM Channel Configuration menu opens. Figure 99 shows a representative VCM Channel Configuration menu.