VP-12, VP-12P IP phones. Operation manual
5
1.2 Device design and Operating principle
VP-12(P) IP phone includes the following subsystem:
•
Controller featuring:
•
Realtek RTL8972C highly-integrated System-on-a-Chip (SoC), including a CPU, 100 Mbits switch
with a built-in PHY, hardware L2/L3/L4 acceleration;
• flash-memory – 16M
В
;
• SDRAM – 128M
В
;
• codec (ADC/DAC);
•
3.2 inch liquid crystal display with 128x64 px resolution;
•
Realtek ALC5621 or Realtek ALC5633Q voice codec;
•
Fully-featured digital keyboard with additional function keys;
•
1 x LAN port: RJ-45 10/100BASE-T;
•
1 x PC port: RJ-45 10/100BASE-T;
•
1 x Handset port: RJ-9 (4P4C) for connecting a handset;
•
1 x Headset: 3.5 mm jack or RJ-9 for connecting a headset;
Design diagram for device is depicted in the figure below.
Depending on hardware version: for versions below 2.0 — Realtek ALC5621 codec; for versions
2.0 and later — Realtek ALC5633Q codec.
Depending on hardware version: for versions below 2.0 — 3.5 mm jack; for versions 2.0 and later
—
RJ-9 (4P4C).
