T1/E1 and Digital Voice Modules
Passport 4400 Hardware Installation Manual
9-4
Strapping
E1 Voice Module Impedance Strapping
Impedance for each E1 interface line is determined by the placement of a header
on a jumper located on the E1 module. Impedance for each interface line may be
straped for either 75
Ω
or for 120
Ω.
The two lines may be strapped for the same
or for different impedance.
The locations of the two impedance straps are shown for line 1 in the following
figure.
Figure 9-6. Location of the E1 Interface Line Straps
Caution:
!
For operation in the United Kingdom, this equipment may not be
connected to an E1 Digital service using the 75
Ω
interface.
Line 1 75 ohms select.
120 ohms as shown.
Содержание Passport 4400 Series
Страница 1: ...Passport 4400 Hardware Installation Manual Part Number 800 1951 20 Rev A June 1998...
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Страница 10: ...Hardware Installation Manual About this document About this document 2...
Страница 30: ...Introduction Passport 4400 Hardware Installation Manual 1 20...
Страница 58: ...Connecting the Expansion Modules Passport 4400 Hardware Installation Manual 4 12...
Страница 66: ...Ethernet Base Module and Interface Modules Passport 4400 Hardware Installation Manual 5 8...
Страница 94: ...Analog Voice Modules Passport 4400 Hardware Installation Manual 8 16...
Страница 104: ...T1 E1 and Digital Voice Modules Passport 4400 Hardware Installation Manual 9 10...
Страница 110: ...Power Supply Passport 4400 Hardware Installation Manual 10 6...
Страница 136: ...Cable Diagram Pin Assignments Passport 4400 Hardware Installation Manual A 20 Figure A 17 Coaxial Cable Female Male...
Страница 142: ...Index 4...
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