Description
The Cortelco 9 Series Multi-Feature Speakerphone (912500-TP2-27S) is a professional single-line corded telephone that combines sophisticated call handling with a full-duplex speakerphone. Caller ID with call waiting, a 99-number Caller ID memory, and a 3-line blue backlit display keep you informed, while 20 two-touch speed-dial locations and three programmable one-touch memory keys speed up everyday dialing. It's a strong fit for reception areas, executive offices, medical practices, and small-business desks.
The Telecom Spot Take
The 9 Series is Cortelco's do-it-all single-line desk phone, and it's the one we recommend when a business wants caller ID, speed dial, and a genuinely usable speakerphone without moving to a digital or VoIP system. The 3-line backlit display and trilingual caller ID (English/Spanish/French) make it easy to live with, and thoughtful business features — one-touch call forward, conference/hold for PBX use, a clear-message button, and separate speaker and handset volume controls — show it was designed for real office workflows. A 2.5mm headset jack and adjustable, desk-or-wall stand round it out. Need two lines? The 9 Series two-line (922500) is the same phone with a second line.
Key Features
- Caller ID with Call Waiting: See who's calling, including a second caller while you're on a call; 99-number CID memory.
- 3-Line Blue Backlit Display: Clear, readable screen with trilingual caller ID (English/Spanish/French).
- 20 Two-Touch Speed Dials + 3 One-Touch Keys: Fast dialing for frequently called numbers, with pause support.
- Full-Duplex Speakerphone: Natural hands-free conversations with separate speaker and handset volume control.
- Business Call Handling: One-touch call forward, conference and hold (PBX), flash, redial, mute, and clear-message button.
- Flexible & Accessible: 2.5mm headset jack, adjustable stand, desk/wall mountable, hearing aid compatible, ringer lo/hi/off.
Technical Specifications
| Specification | Detail |
|---|---|
| Cortelco Part Number | 912500-TP2-27S |
| Model | 9 Series (single-line) |
| Lines | 1 (single-line) |
| Caller ID | Type II with call waiting; 99-number memory; trilingual |
| Display | 3-line blue backlit LCD |
| Memory | 20 two-touch speed dials + 3 one-touch keys (with pause) |
| Speakerphone | Full-duplex; separate speaker/handset volume |
| Business Features | Call forward, conference/hold (PBX), flash, redial, mute, clear message |
| Headset | 2.5mm jack |
| Mounting | Adjustable stand; desk or wall |
| Accessibility | Hearing aid compatible; ringer lo/hi/off |
Frequently Asked Questions
- Is this a single-line or two-line phone?
- The 912500 9 Series is a single-line phone. The two-line version is the 9 Series 922500 (922500-TP2-27S).
- How many numbers can it store?
- It offers 20 two-touch speed-dial locations plus 3 programmable one-touch memory keys, and keeps a 99-number caller ID history.
- Can I use a headset with it?
- Yes. It has a 2.5mm headset jack for hands-free use alongside the built-in full-duplex speakerphone.