SIP – VeriTeknik https://www.veriteknik.net.tr/en/ VeriTeknik Bilişim | VeriTeknik Bilişim Wed, 23 Apr 2014 21:54:41 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 SIP NAT on Cisco IOS stop working https://www.veriteknik.net.tr/en/sip-nat-cisco-ios-stop-working/ https://www.veriteknik.net.tr/en/sip-nat-cisco-ios-stop-working/#respond Wed, 23 Apr 2014 21:54:41 +0000 http://www.plugged.in/?p=953 Suddenly you realized that external SIP phones stop working without any reason, you should be avare of Cisco routers get stuck sometimes. There is a trick to solve the issue with two commands, but first of all be sure that the sip is not registered through arterisk cli: Type on your asterisk: asterisk -rvvvvv and […]

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]]> Suddenly you realized that external SIP phones stop working without any reason, you should be avare of Cisco routers get stuck sometimes.
There is a trick to solve the issue with two commands, but first of all be sure that the sip is not registered through arterisk cli:

Type on your asterisk:

asterisk -rvvvvv

and check sip peers:

sip show peers

Now you should see the extension as UNKNOWN, if this is the case for you apply these steps on your Cisco IOS:

conf t
no ip nat service sip udp port 5060
exit
clear ip nat translation

To see the results, simply type:

sh ip nat translations

Have fun!

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