CHAPTER 3 TERMINALS
Issue 5
UNIVERGE NEAX 2000 IPS General Description
Page 241
8
System performance
8.1 Transmission Characteristics
Transmission Characteristics
Cross Talk Attenuation
More than 70 dB at 1000 Hz
Idle Circuit Noise
Less than -65 dBm
Insertion Loss
(relative to 1KHz-10 dBm)
Station- to-Station - Typical 6 dB
Station- to-Trunk - Typical 0.5 dB
Trunk- to-Trunk - Typical 0.5 dB at 0 dB PAD control
Longitudinal Balance
Trunk Side
Better than 58 dB
PCM Characteristics
EMEA: Line Rate 2 Mbps, A-Law
USA: Line Rate 1.544 Mbps, µ-Law, TI- 04
Standards
Return Loss
More than 15 dB (300 ~ 3,400 Hz)
Line Impedance
Station: 600
Ω
Trunk: 600 or 900
Ω
Leakage Resistance
More than 20,000
Ω
8.2 Tone Plans
Within the 2000 IPS SW R6.2 the tone plans for the European markets have been defined.
8.2.1 Rotary Dial Pulse and DTMF Signaling
(1) Rotary Dial Signal
Specifications
Description
Receiving
Sending
Dial Speed
9 to 22 pps
10 pps +/- 0.8pps
20 pps +/- 0.8 pps
Break Ratio
55 to 77 %
67 +/- 3% or 62 +/- 3%
Inter -Digit Pause
Min. 256 msec.
300 to 1,000 msec.(10 pps)
Switch-Hook Flash
Detection
384 to 2,300 msec.
Not applicable
(2) DTMF Signaling
Specifications
Description
Receiving
Sending
High Frequency Group
1,209Hz
1,336Hz
1,477Hz
697Hz
1
2
3
770Hz
4
5
6
852Hz
7
8
9
Signal Code
Low Frequency Group
941Hz
*
0
#
Frequency
Deviation
+/- 1.8 %
+/- 0.8 %
Signal Duration
Min. 40 msec.
64 or 128 milli-sec.
Inter -Digit Pause Min. 40 msec.
32 to 240 msec.
Signal Level
-46 to -5 dBm
-10 dBm (low group)
- 8 dBm (high group)