1. By Structure

1.1. Desktop Telephone Optical Terminal

1.1.1. IDM-NT008, IDM-NT202B, IDM-NTD421, IDM-GTD442

1.2. 19-inch 1U Telephone Optical Terminal

1.2.1. IDM-30EN, IDM-MAP4E1 Series

1.3. 19-inch Rack-Mounted Telephone Optical Terminal

1.3.1. IDM-120N, IDM-120N-GP, IDM-360ME, IDM-360GP, IDM-MUX300

2. By Fiber Transmission Bandwidth Technology

2.1. Optical Cat Telephone Optical Terminal (Only 1 E1 bandwidth on fiber, long transmission distance)

2.1.1. IDM NT008 8-channel Telephone Optical Terminal

2.2. PDH 100M Telephone Optical Terminal (Provides one or more physically isolated 100M Ethernet, E1 interface, and telephone interfaces)

2.2.1. IDM-120PN, IDM-30N, IDM-30AN, IDM-120N, IDM-360ME, etc.

2.3. PDH 1G Telephone Optical Terminal (Provides one or more physically isolated 1G Ethernet, E1 interface, and telephone interfaces)

2.3.1. IDM-OMP3500, IDM-OMP5000

2.4. SDH Telephone Optical Terminal

2.4.1. IDM-MUX30, IDM-MUX90, IDM-MUX300

2.5. Multi-service Telephone Optical Terminal

2.5.1. Multiple transmission paths, multiple user access types

3. By Transmission Line Protection Technology

3.1. Single-fiber Telephone Optical Terminal

3.1.1. All optical terminals can use a single fiber for transmission, either dual-fiber bidirectional or single-fiber bidirectional

3.2. Fiber and E1 Line Mutual Backup Telephone Optical Terminal

3.2.1. IDM-MAP4E1

3.3. Dual-fiber Transmission Mutual Backup Telephone Optical Terminal

3.3.1. IDM-OMP3500 Series, IDM-MUX Series, IDM-120N

3.4. Chain Network Telephone Optical Terminal

3.4.1. IDM-NTD421, IDM-GTD442 Series, IDM-OMP3500 Series

3.5. Self-healing Fiber Ring Network Telephone Optical Terminal

3.5.1. IDM-NTD421, IDM-GTD442 Series, IDM-MUX Series

3.6. IP Access Telephone Optical Terminal

3.6.1. IDM Voice365-8 Telephone Optical Terminal

4. By Central Office Access Method

4.1. Point-to-Point Telephone Optical Terminal

4.2. Point-to-Multipoint Telephone Optical Terminal

4.3. Telephone Optical Terminal Interoperable with Different Manufacturers via DXC Timeslot Cross-connect Equipment

4.3.1. IDM-MAP4E1 (Telephone signaling bits can be set via network management)

4.4. Telephone Optical Terminal Using NO.7 Signaling and PRI Signaling for Central Office Number Allocation

4.4.1. IDM-G3CP-Mserver

4.5. Central-end Devices with Telephone Dispatch Functionality

4.5.1. M3000, M9000 Integrated Dispatch Switch can directly connect to remote IDM-NTD421 and IDM-GTD442

4.5.2. IDM-G3CP Integrated Dispatch Switch can interoperate with remote IDM-OMP3500, IDM-MUX Series optical terminals, etc.

5. By Industry Application

5.1. Military Field Telephone Optical Terminal

5.1.1. IDM-MTP155 Integrated Access

5.2. Public Security Four-level Network Telephone Optical Terminal

5.2.1. SDH technology, IDM-MUX Series

5.2.2. Ultra-wideband PDH transmission technology, IDM-OMP3500

5.3. Armed Police Telephone Optical Terminal

5.3.1. Broadband fiber self-healing ring network protection with multiple physically isolated Ethernet optical terminals, IDM-GTD442

5.4. Elevator Five-party Intercom Telephone Optical Terminal

5.5. Explosion-proof Telephone Optical Terminal

5.5.1. SDH self-healing ring network Telephone Optical Terminal

5.5.2. Broadband fiber self-healing ring network Telephone Optical Terminal, IDM-GTD442FB

5.6. Firefighting Intercom Optical Terminal

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