11-01-2017 01:00 PM - edited 03-17-2019 11:31 AM
I need to configure a 7821 for a remote worker through a Sonic firewall to an Expressway server.
Do I have to configure anything on the Phone prior to connect it to the firewall?
How does the phone route to the expressway server from the firewall/VPN ?
Thanks,
Pete
11-01-2017 11:38 PM
11-02-2017 12:36 AM
Hi,
You need to allow the following port list through your sonic wall.
You need to make sure that you are running firmware 11.5(1) on the phone. If not, then connect your phone to cucm environment to upgrade the phone firmware.
You need to make sure that your expressway is signed by a CA that is listed in 7821 trusted CAs. See the trusted CAs below.
Once the phone boots it will ask for the service domain and from their will discover expressway and connect to it. If you got your expressway working for jabber then your expressway/cucm config should be good to go.
11-26-2021 09:25 AM
Could you please guide me in detail.
Currently, my environment have expressway solution and Jabber is working fine remotely.
but it’s not signed by CA.
still can I use Ip phone to register from external?
what are the mandatory requirements to get it done or please provide the steps to make Ip phone register from home.
Thank You in Advance…
11-26-2021 11:11 AM
The MRA configuration contains the steps for both, Jabber and IP Phones, that's the document you need to review.
It's mandatory to have the EXP-E signed by a public CA from the ones listed here:
The phones only have those CAs in the trust list, anything not in the list will not work.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide