Matrix ETERNITY NE System Manual 283
• Normal: This is the conventional CO available from the PSTN.
• Hotline: The CO connecting two destinations immediately on grabbing the trunk.
• Delayed Hotline: A special CO available from the PSTN, which works as a normal dial type for some
time and works as a hotline thereafter.
Default: Normal.
• Select Dial Type as Tone or Pulse. Default: Tone.
You can configure the Dialing method as Pulse or Tone (with configurable Pulse Ratio and DTMF ON-OFF
period) according to the Dialing method supported by the CO network to which the CO port is connected.
• If you selected Pulse as Dial Type, select the appropriate Pulse Dial Ratio from the following options
according to the type of Pulse Dialing Ration supported by your CO Network.
• 10PPS, 1:2
• 10PPS, 2:3
• 10PPS, 1:1
• 20PPS, 1:2
• 20PPS,2:3
• 20PPS, 1:1
Default: 10 PPS 1:2.
• Select AC Impedance. The AC Impedance of the CO port must match with the AC Impedance supported
by the PSTN network. By default, the AC Impedance is set as per the “Region” you have selected;
however, you may select the impedance supported by your PSTN network from the following options.
• 600
• 900
• 270 + (750 || 150 nF)
• 220 + (820 || 115 nF)
• 370+ (620 || 310 nF)
• 320 + (1050 || 230 nF)
• 370 + (820 || 110 nF)
• 275 + (780 || 115 nF)
• 120 + (820 || 110 nF)
• 350 + (1000 || 210 nF)
• 200 + (680 || 100 nF)
• 600 + 2.16 µF
• 900 + 1 µF
• 900 + 2.16 µF
• 600 + 1 µF
• Global complex impedance
Default: 600 ohms (for default Region ‘India’).
You can also conduct the AC Impedance Test. To do this, click Determine AC Impedance Settings link.
For more details, see “AC Impedance Test” topic.
• CO Termination allows you to increase near-end echo cancellation on the CO trunk. Near-end echo is
primarily caused by the mismatch between AC Termination Impedance (presented by CO port of SARVAM
UCS to the line) and CO Termination (Impedance presented by the Central Office to the line), and to some
extent by the transmit and receive signal path.
To Next Page
Loading...
