| Loop Line Interface |
| Return loss (complies
with VG2 of Bellcore TR-NPL-000335, Iss. 1, June 1986) |
| Echo
return loss (ERL) |
>15 dB (500-2500
Hz) (Off-hook condition)
> 5 dB (500-2500 Hz) (On hold
condition) |
| Singing return loss,
low (SRL-LO) |
> 9 dB (200-500
Hz) (Off-hook condition)
> 5 dB (200-500 Hz) (On hold
condition) |
| Singing return loss,
high (SRL-HI) |
> 9 dB (2500-3400
Hz) (Off-hook condition)
> 5 dB (2500-3400 Hz) (On hold
condition) |
| Longitudinal balance |
>60 dB (300-3200
Hz) |
| Power Input Requirements |
| Use only UL listed
power transformer rated 120 VAC, 60 Hz, 10 W input; 12 VAC,
250 mA output, available from Teltone. |
| Input voltage range |
12 VAC ± 10% |
| Current requirements |
0.25 Amperes maximum |
| Data
Port (EIA RS-232-C) |
| Protocol |
Asynchronous ASCII,
1 start bit, 7 data bits, 1 parity bit, 1 stop bit |
| Baud rates supported |
300, 600, 1200, 2400,
4800, 9600 |
| Parity supported |
Space (bit 8=0),
Mark (bit 8=1), Even, Odd, or Parity Off |
| Remote Interface |
Control Switch Characteristics
Maximum controlled voltage
Maximum on-state current
Maximum off-state leakage |
20 VAC or DC
100 mA
<10 ma |
Audio Input (From
Remote)
Maximum input level
w
ithout
clipping
Input impedance |
1 Vpp
>10 K ohms |
Audio Output (To
Remote)
Maximum output level
Output
impedance |
1.2 Vpp
Output impedance <4 K ohms |
| Network Transmit
Audio Level |
| Maximum output level |
-9 dBm averaged over
3 seconds |
| Call Progress
Tone Receivers |
Call Progress Tone
receiver
Response range
Frequency
detect range
Tones detected:
Dial tone
Busy
Ringback
Reorder |
-2 to -30 dBm/frequency
340 to 640 Hz
Continuous
0.5 second on, 0.5 second off
2 seconds on, 4 seconds off
0.25 second on, 0.25 second off |
Special information
tone (S.I.T.) receiver:
Response
range
Short pulse duration detect
Long pulse duration detect
S.I.T. frequencies detected |
0. to -24 dBm0
274 ms ± 5%
380 ms ±5%
950, 1400, 1800 Hz ± 50 Hz |
| DTMF Signaling |
Transmitter:
Maximum output level
Frequency
tolerance
Dialing delay
Digit signal length
Interdigit
time
Maximum twist
Receiver:
Response range (level)
Minimum response (time, all
signals)
Must not respond (time)
Minimum digit separation
Maximum digit interruption (hit) time
Maximum twist (high tone
to low tone)
Frequency
tolerance
Confirmation tones:
Connection tone
Acknowledgment tone
Error
tone |
-9 dBm averaged over 3 seconds
± 1.5% of nominal
70 ms after start signal
Programmable: 50 to 255 ms ± 5 ms
Same as digit signal length
3 dB
-5 to -30 dBm/frequency
> or = 40 ms
< or
= 20 ms
40 ms
10 ms
6 dB
±(1.5% + 5) Hz
1 second burst of 941 Hz tone
One burst of DTMF A, duration set by register S11
Triple burst of DTMF D, on/off timing set by register S11 |
| MECHANICAL |
|
| Dimensions |
5.5"W x 1.5"H x 9.0"
D (140 x 38 x 229 mm) |
| Headset port |
Modular headset connector. Use
with headset amplifiers with UL/CSA certification and Electret
compatibility and volume control.
Minimum voltage: 1.85 V at 400 mA with 20 mA loop current. |
| ENVIRONMENTAL |
|
| Storage temperature |
-20 to +60 degrees C |
| Operating temperature |
0 to +50 degrees C |
| Humidity |
95% (noncondensing) |
| REGULATORY |
Designed to meet the requirements
of the following:
U.S. Federal Communications Commission (FCC) Part 68
(Registration Number AHHUSA-65423-MA-E, Ringer Equivalence Number
0.3A/0.5B)
Canadian Department of Communications (DOC) CS-03
U.S. Federal Communications Commission (FCC) Part 15 Class A
Canadian Standards Association (CSA) C108.8-M1983
U.S. Underwriters Laboratories (UL) 1459 (Registration Number
E134230)
Canadian Standards Association (CSA) 22.2 No. 0-M1982 and 225-M90
(Registration Number LR94126) |
