Hardware Installation
Hardware Interface Specifica
tion
FXS Card on an EX Controller ONS card on a 3300 ICP C
ontroller
Timed-flash detection
Not specified
Programmable between 60
and 1500 ms
Dial-pulse detection
Not specified
Not supported
Metering generation
Not specified
Not supported
Earth recall detection
Not specified
Not supported
Ground start detection
Not specified
Not supported
Positive disconnect No Programmable between
250 and 1000 ms, current
feed < 1 mA
Off-hook threshold from
idle
11 mA 3.5 mA
Off-hook from voltage
message waiting
21 mA 20 mA
Off-hook threshold from
ring
21 mA
Not specified
3 Hardware Installation
3.1 Overview
This chapter describes the following procedures that must be performed sequentially to
complete the hardware installation:
1. Installing the EX Controller on page 24
2. Installing Telephony Cards on page 25
21 EX Controller Installation and Administration Guide