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Analog phone no calling out

Hello)

I have the next scheme:

analog phone --- FXS (cisco 2901) ----IP----(cisco 4451x) --- Telephony Provider

I can not call from analog phone to anyone((( When I dial, nothing happens. However 4451x gets incoming call((( Any suggestions?

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1 REPLY
New Member

Check your firewall/nat

Few information.

Check your firewall/nat settings. May be RTP/SIP (or another signalization protocol) doesn't go between cisco 2901 and cisco 4451x.

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