GAI-Tronics 265-001 Intrinsically-Safe Telephone Rack-Mount System User Manual
Page 13
Pub. 42004-200B
Intrinsically Safe Rack-Mount Telephone System
Page: 13 of 13
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02/06
I.S. Series Telephones
Electrical specifications (nominal) ......................................................................................... 12 V, 12 mA
Ringer performance (typical) ............................................................................................ 98 dB @ 10 feet
Frequency (adjustable at IBU)................................................................. 1 kHz - 8 kHz (nominal)
Ring signal loss (18 AWG) ...........................................................................................-4 dB/mile
Signaling........................................................................................................................................ DTMF
Transmission path (2-conductor) ..............................................................................................Full duplex
Microphone...................................................................................................................... Noise-canceling
Earpiece ................................................................................................................ Hearing aid compatible
Output (0 dBm @ IBU TELCO Line) ..........................................................105 dB SPL @ 1 kHz
Audio signal loss (18 AWG) ......................................................................................-1.3 dB/mile
N
OTE
: Must be connected in accordance with GAI-Tronics publication 42004-380.
Approvals
When connected according to GAI-Tronics Pub. 42004-380:
...................................................................................................... Class I, Div. 1, Groups A, B, C, and D;
Class II, Div. 1, Groups E, F, and G; Class III;