I agree. We also have Paetec and XO as redundant voice vendors. I have one as incoming and another as outbound calling. If one vendor goes down I go into our PBX and take out the trunk that is down so it will only utilize the trunk that is working. We also have it setup so that if the trunk does go down with both (they are both Verizon based so sometimes they both go down)then we forward the lines automatically (we do not do anything) to our emergency toll free numbers off site at our cybercenter. In your case you could send these lines to your main office to answer the calls. XO and Paetec do nto charge much to have this service. This many be a more cost effecive solution rather then paying for two vendors.
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