Các mẫu điện thoại bàn grandstream giá rẻ
Grandstream gxp1610: https://vnsup.com/dien-thoai-i....p-grandstream-gxp161
Grandstream GXP1615: https://vnsup.com/dien-thoai-i....p-grandstream-gxp161
Grandstream GXP2160: https://vnsup.com/dien-thoai-i....p-grandstream-gxp216
Grandstream grp2602g: https://vnsup.com/dien-thoai-i....p-grandstream-grp260
Grandstream grp2602:https://vnsup.com/dien-thoai-i....p-grandstream-grp260
Grandstream grp2601p:https://vnsup.com/dien-thoai-v....oip-grandstream-grp2
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