I guess I didn't make myself really clear. I need to be able to record phone conversations at the trunk side not CDR of the call. However, I did find my answer and I guess I should share it.
I've had the pleasure to work with two vendors that have their places in the market. I've worked with both CallRex and Cistera. Both do station side recording by using port mirroring at the switch level. However, when a call has been hair pinned in the gateway and not controlled by the phone, the call will not be recorded. Both require the phone to have control of the call in order for it to be recorded. CallRex is a very good product and cheaper than Cistera, but doesn't have the ability to record a certain extension on a single phone. If a phone is set to be recorded, It will record all phone conversations into that phone. Cistera, however can record a single extension on the phone if the phone has multiple extensions and you only want to record one extension. For example, Let's say you only want to record the agent extension on the phones and not the personal extensions. With Cistera this can be done with no problem.
Now, Today I just found a vendor that will record at the Trunk side as well at the station side. This is very useful in financial and health care environments where hairpinning of calls is possible and need to be recorded. This vendor is called VPI-Corp. They have multiple integration types depending on the type of PBX especially Cisco Call Manager.
For anyone that would like to read about these different vendors here are the links:
http://www.callrex.com
http://www.cistera.com
http://www.vpi-corp.com
