58 Chapter 3 Expansion Modules
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T1 Voice Expansion Module
The T1 Voice Expansion Module provides the following:
•
Six voice channels provided on the basic module
•
Expandable to 24 T1 voice channels (in six-channel increments) with
optional Digital Voice Expansion Modules (maximum of three)
•
Maximum of two T1 Voice Expansion Modules per Passport 4460 unit,
providing support for up to 48 voice channels
The T1 Voice Expansion Module is compliant with the ANSI T1.231 standards
A tri-color indicator light, located to the left of the RJ-48 connector on the back
panel, displays the status of the module and T1 line (see
for indicator
functions).
For additional information, see the following:
•
•
Chapter 7, “Port Connections for the Passport 4460
•
Appendix B, “Regulatory Compliance and Telephone Company
Requirements
T1
Receive Data from Network (Ring)
Receive Data from Network (Tip)
Transmit Data to Network (Ring)
Transmit Data to Network (Tip)
Pins 3, 6, 7, 8 Not Connected
1
2
3
4
5
6
7
8
RJ-48 Pin Assignments
Pin 1
Indicator
Содержание Passport 4460
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