user manual
ND-20292
CHAPTER 2
APRIL, 1990
TDM clock
2.048 MHz
TDM slot period
488.28 ns.
TDM data bus
8 bit
TDM time frame 125 ps.
4. Telephones
a. Multiline Terminal and EDE-30-( 1 unit:
Voltage:
-11 - -26 VDC
Max. current:
200 mA
Acoustic characteristics meet Electronic Industry
Association (EIA) standard proposal SP-1286 and standard
EIA RS-470.
b. Single Line Telephone
Standard 2500 set:
500 network
Nominal current:
35mA
Ring signal:
65 VAC RMS, 20 Hz
DkrnII:
Nominal current:
2omA
Ring signal:
50VAC RMS, 16Hz
Lamp signal: 53-88VDC
220.16 DIALING SPECIFICATIONS
1.
2.
Dial Pulse Address Signaling: (Refer to Table 200-
10)
a. Pulse rate:
10 pps/20 pps
b. Percent break:
61 & 3 percent
c. Interdigital interval:
nominal 700 ms.
DTMF Address Signaling
a. Frequencies:
Table 200-10
Nominal High Group
Frequencies (Hz)
1209 1336 1477
69’ 1 2 3
Nominal ,,. 4 5 6
Low Group
Frequencies(Hz1 852 7 8 g
941 * 0 #
b. Frequency deviation:
Less than f 1.5%
c. Signal level:
Nominal level per frequency:
-6 - -4dBm.
Two sinusoidal signals, one from a high group of three
frequencies and one from a low group of four
frequencies.
Minimum level per frequency:
Low group:
-1OdBm.
High group:
-8 dBm.
Maximum level per frequency pair:
+ 2dBm.
d. Rise time:
Within 5 ms.
e. DTMF tone duration:
Default:
Minimum:
Maximum:
f. Interdigital time:
Default:
Minimum:
Maximum:
3. Dialing Memories
110 ms.
60 ms.
760 ms.
70 ms.
40 ms.
180 ms.
a. Station speed dialing:
20 buffers (16 digits each) per station
110 buffers (16 digits each) per ETE-16K-1
b. System speed dialing:
80 buffers (16 digits
each) per system.
c. Last number redial:
1 per station (16 digits
max.).
d. Saved number dialed:
(Save & Repeat) 80 per
system (16 digits max.).
220.17 BATTERY BACKUP
1. Backup Battery power is equipped on the CPU-EC 1,
the SMDR-E ETU and the LCR-E ETU. These
NiCad batteries, when fully charged, retain
memory contents for approximately seven days,
when power is removed from these ETUs.
2. Functions receiving backup with battery power are
as follows:
a.
System Program
b. Speed Dial Memories (System and Station1
C. Night Transfer Status
d. Call Forwarding
e. Clock/Calendar
f. Callback Request
g*
Message Waiting
h. Do Not Disturb
i. Save & Repeat
j.
SMDR Data
k. LCR Data
1. Forced/ Verified Account Codes
m.
Maintenance 8z Diagnostics Information
200 - 10