Lucent Technologies manual TN1654 DS1 Converter Release 6r Only, Set Circuit Pack Switches

DEFINITY Enterprise Communications Server Release 6	Issue 5
Installation and Test for Multi-Carrier Cabinets 555-230-112	May 1998

5Install and Wire Telephones and Other Equipment

TN1654 DS1 Converter (Release 6r Only) Page 5-23

TN1654 DS1 Converter (Release 6r

Only)

Set Circuit Pack Switches

The configuration switches on the TN1654 must be set before the circuit pack is installed. The TN1654 can be configured for either T1 or E1 operation. All 4 facilities on the circuit pack are configured as a group. It is not possible to have T1 and E1 facilities supported on the same circuit pack at the same time.

E1 facility line termination impedances of 120 Ohms for twisted-pair and 75 Ohms for coax wiring are supported. The T1 line impedance is fixed at 100 Ohms and the T1 framing is selectable for ESF (Extended Super Frame) or D4 for each facility.

Figure 5-11 shows the location of the switches. Table 5-9 shows the switch setting positions and functions.

Table 5-9. TN1654 DS1 Converter Configuration Switches

Switch	Function	Up	Down
1	Type of Facility	T1	E1
2	Span A Line Impedance (E1 Only)	120 Ohm	75 Ohm
	Span A Framing (T1 Only)	ESF	D4
3	Span B Line Impedance (E1 Only)	120 Ohm	75 Ohm
	Span B Framing (T1 Only)	ESF	D4
4	Span C Line Impedance (E1 Only)	120 Ohm	75 Ohm
	Span C Framing (T1 Only)	ESF	D4
5	Span D Line Impedance (E1 Only)	120 Ohm	75 Ohm
	Span D Framing (T1 Only)	ESF	D4
6	Force Fiber Data-Stream	Enabled	Disabled
	Scrambling

1.Set the configuration switches on the TN1654 as required per site.

2.Set Switch 6 down (disabled).