Enough Bandwidth?

there is always the struggle of measuring for bandwidth needs and type:

guaranteed(4.5mb dedicated 600-$900) vs best effort(comcast business cable 100mb for approx $200 a month)

New small office with hw vpn tunnel back to main office hour away.

onsite AD replicating across tunnel.
VOIP phones back to IP phone system pbx at main office.
eight users (mostly sales)
conference room with tv and want to do some type of tel/Vid conference back to main office.
moving of 30/40mb art/pic files from and to main office.
of course will wan to prioritize voice traffic and vid traffic vs data traffic over tunnel.

enough/Thoughts?

Thx
dee30Asked:
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pgm554Commented:
What about Ethernet?
Anybody offering it around your locale?
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Dan CraciunIT ConsultantCommented:
Your needs might be different, but I no longer buy dedicated lines.

Instead, I buy 2 best-effort lines from 2 different providers. Preferably on 2 different mediums (fibre + cable is ideal). Just buy a dual-wan router and you're set.

This way, the availability is better than on a dedicated line, the speeds are usually better and it's all at a fraction of cost. You can route your most valuable traffic on the best connection and use the other for the rest (load-balancing) or simply keep one in reserve (fail-over).

HTH,
Dan
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dee30Author Commented:
Best effort cable is still best effort... my concern is for the VOIP traffic and QoS needs and my AD replication health over that best effort line....

Also, I have request out on MetroE availability but so far nothing.  I'm hearing it's coming fro Comcast but guarantee on time.

Thx
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pgm554Commented:
Used SIP over Comcast with no issues.
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dee30Author Commented:
i'm not sure comcast business cable offers sip services in my area at this time.  I need the phones to allow 4 digit ext dial and work off the PBX IP500 at  the other end of the WAN over hw vpn tunnel.  Would this be doable?
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pgm554Commented:
Comcast owns these folks:

http://www.ngt.com/

I resale their product,but you can go direct through Comcast I believe.

You would need a converged router like :

http://www.sophiesystems.com/edgewater-networks-4500-edgemarc-5-converged-networking-router-5-concurrent-wan-calls---open-box.aspx?gclid=CKWjt8Tn7bwCFQ-Dfgod-BAAgA

and your PBX must support SIP.
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dee30Author Commented:
Thanks for feedback.
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