Nortel DMS-100 Series Maintenance Manual page 47

Table 2-8 Recommended NT6X21AD DIP switch settings
Switch position
ON
Recommended
application 0dB
P-phone sets X
long loop:
19-24dB EML
P-phone sets X
medium loop:
17-19dB EML
P-phone sets
medium loop:
4-17dB EML
P-phone sets
short loops:
0-4dB EML
Northern
Telecom UDLCs
Other vendors X
UDLCs
NT6X21AC
equivalent mode
Note: dB=decibel NL = not loaded9+2 = loaded (900 ohm + 2.16 micro-farads) networkVpp = voltage
peak to peakEML = estimated measured loss, as defined in Business Set Line Engineering ,
297-2011-180
The following two tables list the two acceptable limits for transhybrid loss
(THL) dependent on the D/A level selected. Because the NT6X21AD uses the
same diagnostics as the NT6X21AC, the THL limits are modified for
diagnostic purposes. The "NT6X21AC THL limits" table is for the
can be data filled. The following table lists the recommended DIP switch
settings.
D/A voice Balance
S1
Switch position
OFF ON
-3.5dB NL
X
X
X
X
X X
X X
DMS-100 Family NA100 Star Remote System XPM15 and up
Star Remote System hardware 2-27
S2
Only
OFF S3 ON
9+2 0.6Vpp
X X
X
X X
Signaling level
S3 and S4
Only Both Both
S4 ON ON OFF
0.8Vpp 1.3Vpp 0.14Vpp
X
X
X
X
X