Ericsson LBI-39224 manual Analog or Digital Voice

LBI-39224

Figure 18 T1/E1 Digital Site Configuration Dialog Box

(T1 Line Type Selected)

Help

Choose the Help button to access the Help function. (Help is also available by pressing the F1 key.)

Analog or Digital Voice

In addition to T1 or E1 selection, T1/E1 Interface Card configuration includes selecting one of three primary board operating modes:

–Analog/modem mode ("Analog or Digital Voice using Modems")

In the analog/modem mode, the T1/E1 Interface Card transfers PCM-encoded signals between the CEC/IMC TDM network and the T1/E1 line. PCM-encoded signals transferred by this mode include analog (clear) voice, modem-encoded digital voice, and/or modem-encoded data signals. In this mode each site channel is assigned to a T1/E1 channel. In addition, this mode allows use of the T1/E1 Interface Card subrate ports if T1/E1 channels are available after site channel assignments.

Two CEC/IMC TDM bus slots coincide to one full duplex T1/E1 Channel. This is exactly analogous to a CEC/IMC Audio Board channel where two TDM bus slots coincide to

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