Brand: NEC
Category: Other
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for SL1000
Uploaded: Nov. 21, 2025, 8:37 p.m.
Manual Publish Date: 2012-11-01
Warranty Information
Warranty information for the SL1000 system is detailed within the manual, likely covering hardware components.
The SL1000 is a small compact KSU designed for small/medium businesses, offering simple installation and operation. It supports a basic configuration of CPU, four analog trunk ports, and eight hybrid extension ports, with expansion capabilities for up to 48 analog trunks and 96 Multiline extensions by adding more KSUs. It also supports Digital Network (BRI/PRI, E1), IP Trunks (SIP/H.323), and IP extensions. The system includes features like built-in VRS, power failure transfer, and can be expanded with various interface cards for enhanced functionality.
Troubleshooting and error codes
| Status | LED Indication | RUN (D1) | D2 | D3 | D4 | D5 |
|---|---|---|---|---|---|---|
| System Operating Normally | Blinking | Off | Off | Off | Off | Off |
| System Operate Normal + File accessing | Blinking | Off | Off | Access Blinking | Off | Off |
| System Starting Up | On | Off | Off | Off | Off | Off |
| Boot is starting | On | Off | Off | Off | Off | Blinking |
| Initializing the disk or formatting | Blinking | Off | Off | Off | Off | Off |
| Reading System Program | Blinking | Off | On | Access Blinking | Off | Off |
| Reading Error of System Program | Off | On | Off | Off | Off | Off |
| System Initializing + DSP loading process | On | Off | On | Access Blinking | Off | Off |
| Initializing System Program | Blinking | Off | On | Access Blinking | Off | Off |
| Upgrading System Program (in the Flash Memory) | Off | Blinking | Off | Access Blinking | Off | Off |
| Batch file Error | Off | On | On | Off | Off | Off |
| Completed the System Program Upgrade | Off | Blinking | Blinking | Blinking | Off | Off |
| Security Tip Error | Off | Blinking | Off | Off | Off | Off |
| Error alarm (Major) occurred | Blinking | Blinking | Off | Off | Off | Off |
| Error alarm (Minor) occurred | Blinking | Blinking | Off | Off | Off | Off |
| Shutting Down | Blinking | Off | Off | Off | Off | Off |
| Power Off | Off | Off | Off | Off | Off | Off |