1. A telecommunication network architecture compatibility validation system, comprising: one or more processors; and one or more computer readable media storing instructions that are executable by the one or more processors to perform operations comprising: establishing, by a first telecommunication device configured to perform a first functionality, a first communication link with a first telecommunication network that includes at least a first telecommunication hardware technology (THT) and a second THT; performing, on the first telecommunication device, a first test protocol to validate compatibility of the first functionality with each of the first THT and the second THT; subsequent to the performing the first test protocol: establishing, by a second telecommunication device configured to perform a second functionality and the first functionality, a second communication link with a second telecommunication network that includes at least the second THT and a third THT; performing, on the second telecommunication device, a second test protocol to validate compatibility of the second functionality with each of the second THT and the third THT; and executing, on the second telecommunication device and by a legacy protocol implementation module, a legacy test protocol to validate compatibility of the first functionality with each of the second THT and the third THT.