NEC UNIVERGE NEAX 2000 IPS - Audible Tones and Ringing Signal; Built-In Modem on MP Card

CHAPTER 8 SYSTEM PERFORMANCE
UNIVERGE NEAX 2000 IPS General Description Page 186
Issue 5
Audible Tones and Ringing Signal
Audible Tones
Specifications of Audible Tone
TONE FREQUENCY INTERRUPTION
Dial Tone (DT) 350 Hz mixed with 440 Hz Continuous
Special Dial Tone (SDT) 350 Hz mixed with 440 Hz 0.125 sec. ON, 0.125 sec. OFF
Busy Tone (BT) 480 Hz mixed with 620 Hz 0.5 sec. ON, 0.5 sec. OFF
Reorder Tone (ROT) 480 Hz mixed with 620 Hz 2.5 sec. ON, 0.25 sec. OFF
Howler Tone (HWT) 2,400 Hz interrupted by 16 Hz Continuous
Service Set Tone (SST) 350 Hz mixed with 440 Hz Continuous
Ring Back Tone (RBT) 440 Hz mixed with 480 Hz 1 sec. ON, 3 sec. OFF
Hold Tone (HDT) 480 Hz mixed with 620 Hz
0.25 sec. ON, 0.25 sec. OFF
0.25 sec. ON, 1.25 sec. OFF
Second Dial Tone 440 Hz mixed with 480 Hz
0.25 sec. ON, 0.25 sec. OFF
0.25 sec. ON, 1.25 sec. OFF
Call Waiting Ring Back
Tone
440 Hz mixed with 480 Hz 1 sec. ON, 1 sec. OFF
Ringing Signal
DESCRIPTION SPECIFICATIONS
Frequency 20 Hz (Nominal)
Voltage 75 Vrms (Nominal)
Interruption:
2 sec. ON, 4 sec. OFF (for external call)
1 sec. ON, 2 sec. OFF (for internal call)
Note:
The 2000 IPS has the capability to detect the above type of signal from Central Office and
to transmit the above type of signal to PBX stations.
Built-In Modem on MP Card
DESCRIPTION SPECIFICATIONS
MODEM 33.6 kbps