| Manufacturer |
HD Telecom |
Harris | HD Telecom |
Harris | |
| Unit |
HD 7 | TS-22 |
HD-4 | TS-30 | |
| Price |
104.95 |
250.00 |
139.95 | 185.00 | |
| DSL Circuit Protection |
yes | no |
yes | no | |
| Speakerphone in Talk
mode – battery |
no | no |
no | no | |
| Speaker in Monitor
mode | yes |
no | no |
no | |
| Speaker
in Monitor mode |
yes | yes |
no | no | |
| Speaker in Talk Mode
- line powered |
no | no |
no | no | |
| Automatic Timed Speaker
turn-off | yes,
5 min | no |
no | no | |
| Battery Power Indicator |
yes | yes |
na | na | |
| One Touch Memory Dialing |
3 x 16 digits |
no | no |
no | |
| Speed
Dialing Locations (Repertory Memory) |
10 x 16 digits |
9 x 18 digits |
no | no | |
| High Impedance Monitor
Mode | yes |
no | yes |
yes | |
| Monitor
Impedance > 120K Ohms |
yes | yes |
yes | yes | |
| Ringer for Incoming
Calls | yes |
yes | yes |
yes | |
| Tone
and Pulse Dialing |
yes | yes |
yes | yes | |
| Last Number Redial
- T/P | 32 digits |
18 digits | 23
digits | 18 digits | |
| Line Polarity Indication |
yes | yes |
yes | yes | |
| PBX Pause Feature |
yes - 3 sec |
yes – 4 sec |
no | no | |
| Hook Flash - Register
Recall | yes |
yes | yes |
yes | |
| Mute
for Microphone |
yes | yes |
yes | yes | |
| Over-voltage/Over-current
Protection |
yes | yes |
yes | yes | |
| Est. Battery Life
- speaker at full volume |
100+ Hours |
? | na |
? | |
| Weather
Resistant | yes |
yes | yes |
yes | |
| Non-Slip
Rubber Shoulder Pad |
yes | yes |
yes | no | |
| Field Changeable Cordset |
yes | yes |
yes | yes | |
| Belt Clip Size |
Std | . Std | .
Std | XL | |
| Warranty Period |
18 Mos | 18 Mos |
18 Mos | 18 Mos | |
