Additional maintenance procedures
TN464E/F option settings
390
Maintenance Procedures
December 2003
TN464E/F option settings
S8100 only
The TN464E/F DS1/E1 Interface - T1/E1 circuit pack interfaces between a 24- or 32-channel Central
Office/ISDN or tie trunk and the TDM bus.
Set the switches on the circuit pack to select bit rate and impedance match. See
Figure 118, TN464E/F option settings,
Figure 118: TN464E/F option settings
Table 94: Option switch settings on TN464E/F
120 Ohms
Twisted pair
75 Ohms
Coaxial requiring 888B adapter
32 Channel
2.048 Mbps
24 Channel
1.544 Mbps
Figure notes
1
Backplane connectors
5
32 channel
2
24/32 channel selector
6
120 Ohm (shown selected)
3
75/120 Ohm selector
7
24 channel (shown selected)
4
Faceplate
3
4
5
1
6
2
7
tn464_ef RPY 012098
Summary of Contents for CMC1
Page 1: ...Maintenance Procedures 555 245 103 Issue 1 1 December 2003 ...
Page 14: ...Contents 14 Maintenance Procedures December 2003 ...
Page 416: ...Additional maintenance procedures IP Telephones 416 Maintenance Procedures December 2003 ...
Page 426: ...Index X 426 Maintenance Procedures December 2003 ...