Is it antenna with a low DC resistance (close to zero)? It could be the same problem as with Huawei B593 antenna selection.I live in a very remote area and have to make use of an external antenna and I was glad to see that the router has two external antenna ports. I have however since discovered that these ports are useless as there is no difference in signal strength with or without an external antenna.
Normally router software allows one to select either the Internal or External antenna, however the ZTE software does not have this option leading me to believe that the SMA connectors are bogus. I have written to ZTE support and after 3 months have still not received any conclusive answer from them.
Contact Poynting, the last time I visited the office, they had this router in stock, so they must know this product.
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