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Telephone Accessories User Manual

ManualsBrandsCisco Systems ManualsTelephone AccessoriesCisco Small Business Pro Analog Telephone Adapters SPA2102
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Troubleshooting
ATA Administration Guide 238
D
NOTE STUN does not work with a symmetric NAT router. Enable debug through
syslog (see FAQ#10), and set
STUN Test Enable
to yes. The messages
indicate whether you have symmetric NAT or not.