Grandstream Networks GRP2613. Product type: IP Phone, Product colour: Black, Handset type: Wired handset. Dual-Tone Multi-Frequency (DTMF) modes: In-band, Out-of band, SIP info. Lines quantity: 4 lines, Phonebook capacity: 2000 entries. Volume control: Buttons. Display: TFT, Display diagonal: 6.1 cm (2.4"), Display resolution: 320 x 240 pixels
