doorbell not working

  1. J

    Servicing systems

    Hello all new guy here. My question is this, why am I seeing such a ridiculously high return for service tickets coming across my desk? Ive installed DVRs and NVRs for a few years now but ever since dalhua and Hikvision have come around it seems like my phone rings two to three times a day...
  2. M

    Doorbell camera not working after router upgrade

    We have a DHI DB11 2MP wireless. At end of last year, our ISP (CenturyLink) replaced our router. New router is 5G, replacing 2.4 (?) New IP registered on our NVR, and all security cameras in system display on our security monitors. Since replacement, our doorbell will not show on the NVR monitor...
  3. Jay74

    Dahua VTH5222CH-S1 (2-wire-Inside monitor) and VTO4202F-P (Modular door station) connection issues

    Hello fellow Dahua techies, after a total of 28 hours of internet research and testing I finally found a forum with topics "almost" pertaining to my issue. I'm desperately looking for a solution to a problem I have that one of you might have an answer for. My video doorbell system consists of...
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