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So are the extension DID numbers or are they being translated from whatever the caller dials? &nbsp;Also what type of PSTN connection do you have? &nbsp;PRI, SIP, Analog lines, etc..?<br />
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Thanks,
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So are the extension DID numbers or are they being translated from whatever the caller dials?  Also what type of PSTN connection do you have?  PRI, SIP, Analog lines, etc..?

Thanks,

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Are the extensions double forwarded? Check restriction on forwarding related issue.
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Are the extensions double forwarded? Check restriction on forwarding related issue.

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because through research I found out we have a licencing issue
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because through research I found out we have a licencing issue

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I have two extension numbers &amp;&nbsp;they are both working internally however when users externally try to call one of the extension numbers it appears to be going through however doesn't???<br />
Can someone tell me what I've missed?&amp; where I need to check? Ok <br />
Thank you all for you're help?
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I have two extension numbers & they are both working internally however when users externally try to call one of the extension numbers it appears to be going through however doesn't???
Can someone tell me what I've missed?& where I need to check? Ok 
Thank you all for you're help?

CUCM extension number can't be called externally

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).