Thank you for asking this question in the support community. I recommend following the Troubleshooting Internet Speed Test Issues guide.
I hope that makes sense, but please do not hesitate to reply to this post with any additional questions. I will be happy to help in any way I can.
Thanks Levi, That was exactly what I'm looking for. Do you have any documents similiar for point to point connection? point to point t1, point to point ethernet, etc?
I have previously run speed tests on the 3448 and it's maximum throughput is about 80Mb/s.
If you more rules in place looking at traffic it would obviously be slower.
The same concepts from the guide can be applied to T1 and any Ethernet connection.
Let me know if you have any other questions.