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User sonar235 uploaded this VoIP Phone Yealink Sip-t48s Gigabit Voip Ip Phone Session Initiation Protocol Telephone Yealink SIP-T48G PNG PNG image on November 19, 2017, 10:06 am. The resolution of this file is 850x510px and its file size is: 242.90 KB. This PNG image is filed under the tags: