Home » Topics » Voice over IP » Help! Cisco FXO Only First Port answers
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KarinGuest
Hi, i’ve setup a cisco 3600 router with 2 fxo’s, if i plug only one fxo port to the pbx, both ports work (individually).
If i connect the two fxo ports at the same time (just plug the 2 wires) only the first port (port 0) works and the other sounds busy.
The second port only answers calls if the first port is unplugged.
Any ideas in this weird behavior ?
karine
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