BIS CRS Certification for Telephone Answering Machine Obtain BIS CRS Certification for Telephone Answering Machines with expert from UMSPCS. We provide end-to-end support for testing, documentation, BIS registration, and compliance under IS 13252 (Part 1):2010. https://umspcs.in/service/bis-crs-product/telephone-answering-machine #biscrs #biscrscertificate #biscrscertification #biscrstelephoneansweringmachine #telephoneansweringmachine #bisfortelephoneansweringmachine #crsfortelephoneansweringmachine