Job Description :
Role: Telephony tester Location : Mountain View, CA Duration :Contract/FTE Job Description: Experience in mobile communications system, testing process in software development activities and debugging issues. Requires overview knowledge of LTE (NAS, L3, L2 and L1)/VoLTE related technical areas, such as from 3GPP LTE or SIP/RTP/IMS. Understanding of digital communications systems, RF propagation, CDMA, OFDM, telecommunications concepts Understanding of Physical/MAC layers and Call Processing concepts in one or more of the following air interface standards CDMA2000, 1xEV-DO (Rev 0/A/B), GSM/ GPRS /EDGE / Rel99/ Rel5 / HSDPA/ HSUPA/HSPA+, LTE Understanding of wire line and wireless data protocol stacks including RLP, PPP, IP, TCP, IPV6, MIPV6, etc. Understanding of software development and testing concepts for wireless handsets for various air interface standards Familiarity with IP telephony network , SIP, IMS, and IP telephony standards Able to perform call box test. organize test preparations effectively and writing document for reports. Exposure to python is added advantage