Multifunctional telephone

DuHong multifunctional telephone supports external SIM card hot swappable calls, voice and video calls (without binding WeChat and DingTalk), and the product is based on SAAS architecture. ◆ Convenient for students to have voice and video calls with their parents at any time; Hot swapping SIM card for voice and video calls; Set up 30+family phone numbers, limited to daily calls, daily calls, monthly calls, and single calls; ◆ Support leaving messages for parents in text, voice, and video formats; ◆ Support viewing parents' text, voice, and video messages; ◆ Leave, cancellation of leave, access control linkage for entry and exit; Multiple functions including loss reporting, consumption inquiry, recharge inquiry, subsidy inquiry, etc; ◆ No ringing or incoming calls allowed; ◆ Limited SIM card calling function for telecom operators;