User's Manual

GVR3550 USER MANUAL
Grandstream Networks, Inc. GVR3550 User Manual Page 45 of 76
Firmware Version 1.0.0.0 Last Updated: 10/2013
 Secondary DNS
Server :
Input secondary DNS server manually
 MTU （ B ） :
Input MTU(Maximum Transmission Unit), the largest packet transmitted on the
network.If the GVR3550 MTU is larger than the one of gateway, the larger packet
will be disassembled to be transmitted, please confirm your gateway MTU before
setup.
 PPPoE:
Check to set static network parameters
 Username
Input the username provided by the vendor
 Password:
Input the password provided by the vendor
ADVANCED SETTINGS
Advanced Settings page is shown in figure 49. Users can set PPPoE, UPnP and multicast group.
Figure 49: GVR3550 Advanced Settings
ENABLE PPPoE
Enable DDNS to access GVR3550 via the domain name if already enabled PPPoE connection to the internet,
with this way can effectively solve the problem that access GVR with dynamic IP.
The GVR3550 supports 3322, NOIP, DynDNS.Select the proper DNS type and input the correct domain
name, username and password to complete the GVR3550 DDNS settings after enabled DDNS.
CONFIGURING UPnP
The full name of UPnP is Universal plug-in and Play, enable NAT of UPnP can realize auto port mapping
thus allowing external computer to access intranet to enhance network efficiency.
After clicking Enable UPnP, users can click on to set the external port No., as shown in figure 50 below.
Figure 50: GVR3550 UPnP Settings