| Part Number | Description |
| RC951-4FEE1 | Standalone, 4*10/100BaseTs Ethernet over an E1 link, supports both 120ohm balanced and 75ohm unbalanced connector (BNC) |
| RC952-FEDS3/E3 | Module, a 10/100BaseT Ethernet over DS3 or E3 link supports 75ohm unbalanced connector (BNC) |
| RC952-FEDS1/E1 | Module, a 10/100BaseT Ethernet over an E1/DS1 link, supports 120ohm balanced and 75ohm unbalanced connector (BNC), or 100 ohm DS1 interface |
| RC952-FXE1 | Module, a 100base-FX Ethernet over an E1/DS1 link, supports 120ohm balanced and 75ohm unbalanced connector (BNC), or 100 ohm DS1 interface |
| RC953E-3FE16E1 | Standalone, 3*10/100BaseTs Ethernet over 16 E1 links, supports both 120ohm balanced and 75ohm unbalanced connector (BNC) |
| RC953E-GESTM1 | Standalone, Gigabit Ethernet over channelized STM1 with 1+1 line protection |
| RC953-FE4E1/FX4E1 | Standalone, a 10/100BaseT Ethernet over 4 E1 links, supports both 120ohm balanced and 75ohm unbalanced connector (BNC) |
| RC953-FE8E1/FX8E1 | Standalone, a 10/100BaseT Ethernet over 8 E1 links, supports both 120ohm balanced and 75ohm unbalanced connector (BNC) |
| RC954-FE4E1/FX4E1 | Module, a 10/100baseT or 100Base-FX Ethernet over 4 E1 links, support 75ohm unbalanced connector (BNC) |
| RC954-FE4E1/FX4E1-BL | Module, a 10/100base-T or 100baseFX Ethernet over 4 E1 links, support 120ohm balanced interface |
| RC954-FE8E1/FX8E1 | Module, a 10/100baseT or 100Base-FX Ethernet over 8 E1 links, support 75ohm unbalanced connector (BNC) |
| RC954-FE8E1/FX8E1-BL | Module, a 10/100base-T or 100baseFX Ethernet over 8 E1 links, support 120ohm balanced interface |
| RC954-2FE4E1 | Module, 2*10/100base-T Ethernet ports over 4 E1 links, support 120ohm balanced interface |
| RC954-2FE8E1 | Module, 2*10/100base-T Ethernet ports over 8 E1 links, support 120ohm balanced interface |
| RC956-FE8E1/FX8E1 | 6U Module, a 10/100base-T or 100baseFX Ethernet over 8 E1 links, supports 120ohm balanced and 75ohm unbalanced connector (BNC) interface |
| RC958-FEE1 | Module, a 10/100base-T Ethernet over an E1 link, supports 120ohm balanced and 75ohm unbalanced connector (BNC) interface |
| RC958-FXE1 | Module, a 100baseFX Ethernet over an E1 link, supports 120ohm balanced and 75ohm unbalanced connector (BNC) interface |
| RC958-FE4E1/FX4E1 | Module, a 100base-FX Ethernet over 4* E1 links, support 75ohm unbalanced connector (BNC) interface |
| RC958-FE4E1/FX4E1-BL | Module, a 100base-FX Ethernet over 4* E1 links, support 120ohm balanced interface |
| RC958-FE8E1/FX8E1 | Module, a 10/100base-T or 100baseFX Ethernet over 8 E1 links, supports 75ohm unbalanced connector (BNC) interface |
| RC958-FE8E1/FX8E1-BL | Module, a 10/100base-T or 100baseFX Ethernet over 8 E1 links, supports 120ohm balanced interface |
| RC959-4FEE1 | Standalone, 4*10/100BaseTs Ethernet over an E1 link, supports both 120ohm balanced and 75ohm unbalanced connector (BNC) |
| RC959-4FE16E1 | Standalone, 4*10/100BaseTs Ethernet over 16 E1 links, supports both 120ohm balanced and 75ohm unbalanced connector (BNC) |
| RC959-GESTM1 | Standalone, 2* combo Gigabit Ethernet (RJ45 and SFP) over channelized STM1 with 1+1 line protection |
| RC959-FE8E1/FX8E1 | Standalone, a 10/100BaseT, or 100Base-FX Ethernet over 8 E1 links, supports both 120ohm balanced and 75ohm unbalanced connector (BNC) |