user manual
GXV-3000 User Manual  Grandstream Networks, Inc. 
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7.3  Headset Jack 
The picture below shows the handset and headset connectors’ wiring schema of GXV-3000. 
Figure 7-3: 
As show in the schema, the left side is pin assignment of a RJ-22 handset plug; while the right side is 
showing a normal 2.5mm headset plug. If use want to connect the phone to external Speaker or 
Intercom/Paging system, necessary adaptors are required from local electronic stores. 










