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Can ATA 191 Connect directly to VoIP Provider?

The ZMan
Beginner
Beginner

Hi Guys,

 

Do I need a CUCM to use an ATA 191?

Can I use it to connect directly to a VoIP provider?

Also, can the firmware be upgraded without a CUCM?

 

Thanks,

The ZMan

5 Replies 5

Leo Laohoo
Hall of Fame Community Legend Hall of Fame Community Legend
Hall of Fame Community Legend