- Fully functional version based on SIP2401V
- Support customization for customers
- Add transparent transmission serial port transparent transmission I/O function.
 
 

 
- Fully functional version based on SIP2101V
- Add transparent transmission serial port transparent transmission I/O function.
- Support customization for customers
 

- Pin Type SIP Protocol Intercom Module.  
- Support SIP protocol— SIP v1 (RFC2543), v2 (RFC3261) 
- Supports peer-to-peer SIP intercom off the SIP server

The 2702V network audio module is a SIP intercom module with a pin-type design that can be more easily embedded into OEM products.
 

 
- Support SIP protocol— SIP v1 (RFC2543), v2 (RFC3261)
- Low-cost network audio playback module
- Initiating intercom requests is not supported