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trunk group of FXS ports

I have a 4506 switch with an Access Gateway Module (AGM). On my AGM I have E1 PRI and two FXS ports. On the FXS ports I have two FAX machines connected. The Callmanager is version 3.2.

I want to group the two FXS ports to a trunkgroup, but when I configure this, The FAXes do not answer the call (busy tone). Is there a known issue with trunking FXS ports?

Thanks

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Re: trunk group of FXS ports

If you are using a E1 for the incoming call from PSTN, and then passing it to the FXS ports to a fax machine? This is called "hairpin" call which comes in POTS, and goes out POTS. IT never goes to VOIP. This is a known bug - CSCdz11017. It is fixed in Fixed in 12.2(14.06)T

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