Grandstream
Wireless Phone
Ip Phone
service quality: Layer 2 (802.1p), 802.11e, and Layer 3 (ToS, DiffServ, MPLS) QoS strength: Input: 100-240VAC; Output: +5VDC, 1A (5W) Bluetooth: Yes, Bluetooth 4.2 payment terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram, Trade Assurance Headphone jack: 3.5 mm protocol: SIP RFC3261, TCP/IP/UDP,..