61200.070L1-1 Express XL/XLT User Manual 115
Chapter 5Specifications

SPECIFICATIONS AND FEATURES

This section describes the standard specifications and features incorporated in
the Express XL/XLT.
Network Interface
RJ-45 for ISDN Basic Rate U-Interface or RJ-45 for leased 2B1Q service.
Ethernet Interface (LAN)
Ethernet/IEEE 802.3 10BaseT.
Switch Compatibility
• AT&T 5ESS
• NTI DMS-100
• National ISDN-1
POTS Interface
• Maximum REN = 4
• Caller ID
• Ringing Signal Amplitude = 185 Vp-p (+/- 5V)
• Ringing Signal Frequency = 20 Hz (+/- 3 Hz)
• Supports 3 phones
(18 mA loop current each) at 1,000 ft, 24 AWG
• Supports 2 phones
(26 mA loop current each) at 1,000 ft, 24 AWG
• Supports 1 phone
(49 mA loop current each) at 1,000 ft, 24 AWG
• Supports 4 phones
(14 mA loop current each) at 600 ft, 24 AWG
• Supports 3 phones
(18 mA loop current each) at 600 ft, 24 AWG