TD-LTE Router In-Depth Comparison: AirMaster 3100V vs GreenPacket DT-350

Evaluating indoor TD-LTE desktop modems for Band 42 (3500 MHz) deployments requires comparing RF sensitivity, throughput stability under weak signal conditions, and hardware VoIP capabilities. Here is an empirical comparison between the AirMaster 3100V and the GreenPacket DT-350.

Tested Models: AirMaster 3100V (Firmware V2.0.0B31) • GreenPacket DT-350 (Unlocked Band 42 SIMs)

Key Findings and Benchmark Summary

Feature	AirMaster 3100V	GreenPacket DT-350
VoIP Hardware	No FXS RJ-11 port	Built-in SIP client & RJ-11 port
Wi-Fi Performance	802.11n 300Mbps	802.11n 300Mbps
Weak Signal Stability	Superior antenna gain (RSRP stability)	Moderate gain; benefits from external SMA antennas
Firmware Flexibility	Clean web management	Requires unlocking for full VoIP/APN menus

Recommendation: If telephone VoIP handset integration is required, the GreenPacket DT-350 is the clear choice. For raw RF reception in fringe coverage areas, the AirMaster 3100V delivers more consistent speeds.