Altigen ACM 6.7 Administrator's Manual page 447

the status should be shown as "OK," as in Figure 189.
3. Click the Protocol button in the Channel Group Configuration dialog box to open the
Protocol Configuration window.
4. Select Regular ISDN PRI as the Span Type, and select the Switch Mode according
to your country in the ISDN PRI Setting field, and click OK.
Figure 190. Data Link layer
What you should select in the B Channel Maintenance Message drop-down list
depends on what country you reside in (see Table 2 on page 434).
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