rad Megaplex 2100/2104 modules:
| Product | Description | Size | |
| HS-2 | 2-Channel High Speed Data Module | 305KB | |
| HS-6N, HS-12N | 6/12-Channel High Speed Data Module | 604KB | |
| HS-703 | 4-Channel G.703 Codirectional Data Module | 315KB | |
| HS-DP/3, HS-DP/6 | 3/6-Channel OCU-DP Data Modules | 819KB | |
| HS-ETH | 1/2/4-Channel Ethernet Bridge/Router Modules | 618KB | |
| HS-ETH/SW | 4-Port 10/100BaseT Ethernet Bridge Module with Layer 2 Switch | 545KB | |
| HSF-1, HSF-2 | Fiber Optic Teleprotection Interface Module | 450KB | |
| HS-RN | 4-Channel Low Speed Data Module with End-to-End Control Signaling | 124KB | |
| HS-S | 4-Channel ISDN S Interface Data Module | 394KB | |
| HS-U, HS-U-6, HS-U12 | 4/6/12-Channel ISDN U Interface Data Modules | 851KB | |
| LS-6N, LS-12 | 6/12 Channel Low Speed Data Modules | 900KB | |
| ML-1/2E1/T1, MLF-1/2E1/T1 | Copper or Fiber Optic Interface, Single/Dual E1/T1 Main Link Modules | 843KB | |
| ML-8E1, ML-8T1 | 8 Port Main Link E1 and T1 Module | 732KB | |
| ML-20N | Single/Dual n x 64 kbps Main Link Module | 336KB | |
| ML-IP | TDMoIP Main Link Module | 2,556KB | |
| MSL-8 | 8-Port SHDSL E1 Module | 554KB | |
| Ringer-2100R, Ringer2000, Ringer-2200N | DC Feed and Ring Power Supplies for Voice/Fax and ISDN Modules | 695KB | |
| VC-4, VC-4A, VC-8, VC-8A, VC-16 | 4/8/16-Channel PCM and ADPCM Voice Modules | 1,433KB | |
| VC-4/OMNI | Omnibus PCM Voice Module | 894KB | |
| VC-6LB, VC-6/4LB | 6/4-Channel PCM Voice Modules for Local Battery Telephones | 666KB | |
| VC-16A | 16-Channel ADPCM Voice Module (No Signaling) | 485KB | |
| VF-24/30/48/60 | Single/Dual E1/T1 Digital Voice Compression Modules | 1,469KB | |
| VFS-24/30/48/60 | Single/Dual E1/T1 Digital Voice Compression Server Modules | 869KB |