How to setup FXO/FXS Cards with ISR Routers?

Heree is the list of the equipments:

2 = ISR routers 2800 Series. 1 = FXO-4 Port Card. 1 = FXS-4 Port Card

What we need to accomplish is

1. linking 2 sites HQ Branch via 2 Leased Line.
2. HQ Can dial 9, and call to a phone at the branch FXO --> Call --> FXS---[Phone]
3. Branch can call back to an HQ site

[PABX] ---> Router Router ---> Phone [PABX]

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Posted 5 years ago by newbies in Cisco Systems

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