Verilink AS100 (896-502379-001) Product Manual - Manual (Page 33)

Configuration Parameters
Access System Centum Series User Manual 3-9
12. Timing Source. Repeatedly SELECT to choose NI, Port 1, Int, or
DSX-1.
In an Integrated Access, Fractional T1 environment, ALL units must
use NI timing.
In a point-to-point configuration, one unit must use NI timing and
the other unit must use something else. This “something else” is
nearly always Int (Internal) but some user configurations require
Port 1 or DSX-1 timing. Contact the Technical Assistance Center if
assistance is needed.
Configuration
_NI Interface
to display:
NI Configuration
_Timing Source
DOWN to
display:
NI Configuration
_Timing Source
to display: