Grandstream UCM6100 Security Manual - Manual (Page 10)

UCM6100 Security Manual Page 9 of 23
Figure 3: Registration Failed From Subnet Not Allowed For Registration
Once moving this device to 192.168.40.x subnet, registration will be successful. The following figure shows
the IP address for the same SIP end device is 192.168.40.190. The UCM6100 on IP address
192.168.40.171 replies 200 OK for the registration request.
Figure 4: Registration Successful From Allowed Subnet