 The N870E is the same device like the N870 but has 2 external antennas instead of internal antennas. 
The N870E preferred antenna position is vertical like above. Antenna characteristics: 
Antenna position: - The strongest DECT signal from a dipole antenna is at right angles to the dipole
- This stronger DECT signal should run directly into the room to be covered
- This stronger DECT signal should not be reflected indirectly into the target room via a neighboring metal surface
- The movable, align able antennas make it possible to improve the DECT signal depending on the mounting orientation of the housing
- However, the optimal alignment of the antennas can only be determined by a DECT measurement
Below an example why in normal situations the vertical antenna position is the preferred antenna position. - The strongest DECT signal covers the working area/ floor where the users are located/walking around
- An antenna angle towards the ceiling creates less coverage on the area the users/DECT base stations are located, the strongest DECT signal is send to the other floors
- It is an misunderstanding that an external antenna has more DECT range then an internal antenna
- The possibility to change the antenna position can improve the DECT range
- An wrong antenna position can also cause less DECT range and even call interruptions
|
|