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User methodPCMR uploaded this Sip - VoIP Phone Yealink Sip-t48s Gigabit Voip Ip Phone Session Initiation Protocol Yealink SIP-T23G Telephone PNG PNG image on November 2, 2018, 8:21 am. The resolution of this file is 1000x1000px and its file size is: 361.84 KB. This PNG image is filed under the tags: