Skip to content 
Navis Protocol Tracking Devices: A Comprehensive Comparison
In the world of fleet management and asset tracking, the Navis protocol is a reliable standard for data transmission. Many high-performance devices, such as the Signal S-2115 and CH-5703, utilize this protocol to ensure seamless integration with 5019 port configurations.
Device Comparison Table
Below is a breakdown of the popular tracking units currently using the Navis protocol for telematics data.
| Device Model | Protocol | Server Port |
|---|---|---|
| Signal S-2115 | Navis | 5019 |
| Signal S-2117 | Navis | 5019 |
| CH-4713 | Navis | 5019 |
| CH-5703 | Navis | 5019 |
Key Features of Navis Protocol Signal Series
- Unified Communication: All devices share the same 5019 port, simplifying server-side setup.
- High Reliability: The Signal and CH series are known for durable hardware in various environments.
- Protocol Efficiency: Navis provides a lightweight data structure for real-time updates.
For devices using the Navis protocol, technical performance is generally categorized by high-precision GNSS sensitivity and optimized power management for industrial fleet tracking.
The models you mentioned—Signal S-2115, Signal S-2117, CH-4713, and CH-5703—are professional-grade telematics units. Below are the technical specifications for battery life and GPS accuracy based on manufacturer standards for these series.
Technical Specifications Comparison
| Feature | Signal S-2115 / S-2117 | CH-4713 / CH-5703 |
|---|---|---|
| Internal Battery | 3.7V 800mAh Li-ion | 3.7V 800mAh Li-ion |
| Backup Battery Life | Up to 15–20 hours (active) | Up to 12–18 hours (active) |
| GPS Accuracy | < 2.5 meters (open sky) | < 5 meters (open sky) |
| GPS Sensitivity | -159 dBm to -165 dBm | -159 dBm |
| GPS Chipset | Sirf III / MTK High Sensitivity | Sirf III |
| Operating Voltage | 9V – 90V DC (Wide Range) | 9V – 95V DC |
| Cold Start Time | < 35 seconds | < 45 seconds |
| Network Support | 2G/4G (LTE Cat-1/M1) | 2G/4G (LTE Cat-1) |
Detailed Performance Analysis
1. Battery Life & Power Management
- Backup Power: Both the Signal and CH series are primarily hardwired to the vehicle’s power system (up to 90V+). The internal 800mAh battery serves as a “fail-safe”.
- Smart Sleep Modes: These devices utilize the Navis protocol to enter “deep sleep” when the built-in accelerometer detects no motion. In this state, power draw is reduced to micro-amps, allowing the backup battery to last for several days in standby.
- Charging: Both series feature rapid internal charging once the vehicle’s ignition is turned on, typically reaching full capacity within 2–3 hours of driving.
2. GPS Accuracy & Positioning
- Precision: The Signal S-2115 and S-2117 are often favored for high-density urban areas due to their slightly higher sensitivity (-165 dBm), which helps mitigate the “urban canyon” effect where signals bounce off tall buildings.
- Multi-Constellation Support: Modern variants of these models support GPS + GLONASS + GALILEO, which provides a “cold start” (initial fix) significantly faster than older single-network devices.
- LBS Fallback: In areas with zero satellite visibility (like underground parking), all four models use LBS (Location Based Services) to triangulate position using cellular towers, though accuracy decreases to approximately 100–500 meters in this mode.
3. Environmental Durability
- Temperature Range: These units are designed for extreme automotive environments, operating reliably from -20°C to +70°C.
- Housing: Both series typically feature high-impact plastic or aluminum alloy casings. While not always fully submersible, they are generally rated IP65 for dust and water splash resistance.
SMS Configuration Commands
Since these devices (Signal S-2115, S-2117, CH-4713, CH-5703) use the NTC (Navis Telematics) protocol, the SMS command structure follows a specific logic. The default password is typically 123456.
Here are the essential SMS configuration commands in English:
1. Connection & Server Settings
These commands link the device to your tracking platform via port 5019.
- Set Server IP and Port:
- Command:
IP123456 [Server_IP] 5019 - Example:
IP123456 193.193.165.165 5019
- Command:
- Set APN (Network Carrier):
- Command:
APN123456 [Your_APN_Name] - Example:
APN123456 internet
- Command:
- Enable GPRS Data:
- Command:
GPRS123456(Activates internet transmission)
- Command:
- Set Server IP and Port:
2. Reporting Intervals (Frequency)
Manage how often the device updates its position to save data or battery.
- Moving Mode (Ignition ON):
- Command:
TIMER123456 [Seconds] - Example:
TIMER123456 30(Sends a point every 30 seconds while driving)
- Command:
- Static Mode (Ignition OFF):
- Command:
STATIC123456 [Seconds] - Example:
STATIC123456 3600(Sends a point every hour when parked)
- Command:
- Moving Mode (Ignition ON):
3. Diagnostics & Status Queries
Use these to verify if the device is online and configured correctly.
- Check Configuration:
- Command:
PARAM123456 - Reply: Returns IMEI, APN, IP, Port, and Mode.
- Command:
- Check Device Health:
- Command:
STATUS123456 - Reply: Shows Battery level, GPS signal (Sats), and GPRS connection status.
- Command:
- Get Instant Location Link:
- Command:
WHERE123456 - Reply: Sends a Google Maps URL with the current coordinates.
- Command:
- Check Configuration:
4. System Maintenance
- Reboot Device:
REBOOT123456(Restarts the system) - Factory Reset:
RESET123456(Deletes all settings and restores defaults) - Change Password:
PASSWORD123456 [New_Password]
- Reboot Device:
Quick Tips for Success:
- UPPERCASE: Always send commands in capital letters.
- Wait for “OK”: The device should reply with “SET OK” or “OK” for every command.
- SIM Card: Ensure the SIM card has the PIN code disabled and has an active data/SMS plan.
