Cortelco ITT-2500 Series – FAQs
1. What is the Cortelco ITT-2500 series?
The Cortelco ITT-2500 series is a classic single-line analog desk phone that features a push-button keypad and a rotary-style design.
The Cortelco ITT-2500 series is a classic single-line analog desk phone that features a push-button keypad and a rotary-style design.
2. Are these phones corded or cordless?
They are fully corded and require no batteries or AC power.
3. Do these phones have a rotary dial?
No, they feature a push-button dial with a rotary-style layout.
4. What’s the difference between the model numbers?
The colors and features related to volume control are as follows: ASH represents gray, BK represents black, RD represents red, and VOE indicates a volume-enhanced model.
5. Are they hearing aid compatible?
Yes, all models are compatible with hearing aids.
6. Do these phones have adjustable volume?
Only VOE models include handset volume adjustment switches.
switches for adjusting the handset volume
7. Is wall mounting supported?
Yes, wall mounting is possible for all models.
8. Do I need power or batteries to operate it?
No, it operates using the phone line’s power.
9. Can I plug this into a VoIP adapter?
Yes, by using an Analog Telephone Adapter (ATA).
10. What kind of phone jack does it use?
It uses a standard RJ11 telephone jack.
11. How long is the cord?
Coiled handset cord stretches to about 9 feet; line cord is 6 feet long.
Is the line cord included? Yes.
12. Is any special configuration required?
No, just plug and use. Ensure the tone/pulse dial matches your setup.
The tone/pulse setting allows for ringer volume adjustment.
Yes, manually from a switch on the base.
The ringer volume can be adjusted manually using a switch located
14. Are these phones suitable for seniors?
Yes, large buttons and simplicity make them ideal.
15. Is there a redial button?
No, this is a basic unit without redial.
16. Can you mute the call?
The phone does not come with a mute feature.
17. Is it possible to use this phone in a hotel or hospital?
Yes, it’s perfect for institutions due to its reliability.
18. Will it work with AT&T, Verizon, or Xfinity?
Yes, works with all analog line providers.
19. Is this phone approved for PBX systems?
It is compatible with the majority of analog PBX configurations.
20. Can I use this handset with a fax machine?
Yes, it’s compatible with fax/modem systems.
21. Can I connect a headset?
No headset jack is available.
22. Can I use it during power outages?
Yes, since it draws power from the phone line.
23. Do these phones come in multiple colors?
Yes: ash/beige, red, and black.
24. What material are they made from?
The handset is made from durable ABS plastic.
25. Is the handset lightweight?
It’s sturdy but not heavy—ideal for frequent use.
26. Are these phones still made in the USA?
Check listings—some units may still be U.S.-manufactured.
27. Is a warranty included?
Typically, a two-year warranty is provided.
28. Do I need a phone provider to use it?
Yes, an analog landline or VoIP service is required.
29. Where can I buy replacement cords?
Visit USA Trading Depot for cords and accessories.
30. What’s the best setting for home use?
Place it near your main phone jack—ideal for desks or wall mounts.
Cortelco ITT-2500 Series, see here