The Grandstream GXP2160 is an enterprise SIP telephone with support for up to four lines, dual ethernet ports and can be configured through the built in web configuration page.
This guide has been written for the Grandstream GXP2160 but should also apply for similar models.
This guide will apply for the following handsets:
See the Grandstream GXP2160 product page for more info.
If the phone will not register, check over the account info page for anything that may be mistyped.
Ensure that:
Ensure SIP ALG is disabled on your router. See this page for further information.
Your firewall is not preventing your phone from reaching the internet. Please refer to the NAT and Firewall settings page.
Please be aware that we do not support this model so will be unable to offer assistance. Please contact your supplier for further assistance if required.