Support 4x PRI Ports with SIP Conversion

[asafdieh]

My PSTN is SIP and PBX is PRI. I see the TA units have a DSP limit of 60, so that means only 60 calls can be SIP-PRI at the same time. Need to be able full capacity of 3 or 4 PRI ports (92 simultaneous SIP/PRI calls). I have used the TA900e and works well in when only 1-2 PRIs are needed and calls fall under the DSP limit. What can I use for this larger environment?

[fc]

Use two boxes and for timing chain the other T1 ports that cannot be PRI together for timing. Box to box.