we have config 2 C2600 IOS IP Interprice Plus 12.2.12f. One with FXO e other via ATA 186. We have priorize the trafic with LLQ, like a Cisco Doc (VOIP OVER FRAME RELAY WITH QOS).When a call is made, the voice is cleared and perfect, but when a put a trafic in the wan inerface, we sence a miss of recption of voice on the FXO side only (tx of the ATA). Can anybody help me ?