Since the ZyWALL USG-20 has a very similar interface, the instructions below apply to the ZyWALL USG-20 as well.ĭetailed instructions are available from ZyXELL here ( see page 56, ZLD Configuration). If you are using Cisco phones, you need to disable SIP ALG. Zyxel USG 20-VPN and USG20W-VPN easy mode helps entry-level users and SOHO users effortlessly take advantage of high-speed and secure networking. If you are using Poly phones with your ZyXELL ZyWALL, you need to enable SIP ALG. In the case of the ZyXELL ZyWALL USG-50, we want to The goal of configuring any router or firewall for use on 8x8 service is to prioritize VoIP traffic on your network and achieve optimum call quality. While this device may be fully functional on the tested and/or current firmware version, it is possible newer revisions will cause disruptions in service or make a device fully compliant with the required settings for hosted VoIP services where it was previously not. I have compared the settings and resaved the preshare key, username and password more times than I can remember. I am thinking that the problem is the connection is being blocked somehow in the computer. I have tried stopping and starting the IPsec service. Keep in mind different firmware versions will interact with hosted VoIP services in different ways. Looking at the ZyXEL log the computer I am having trouble with never tries to connect.
At the time of article creation, this device was in a known working state on the firmware used. The purpose of this article is to provide a sample configuration. To change the UDP Session Time Out value.
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