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About product and suppliers:
        Alibaba.com offers 3,348 sip door phone products. About 49% of these are video door phone, 15% are voip products, and 1% are doorbells. 

A wide variety of sip door phone options are available to you, such as voip phone, video phone. You can also choose from paid samples, free samples. 

There are 3,375 sip door phone suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Philippines, which supply 97%, 1%, and 1% of sip door phone respectively. 

Sip door phone products are most popular in North America, Eastern Europe, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 1,262 with ISO9001, 412 with Other, and 18 with ISO14001 certification.