VoIP Forum : General

I just added AT&T Callvantage to my home network.  I had upgraded to Comcast's Home Worker/Teleworker option.  Realized speeeds of 6 Mbps down and 768Kbps up.  Once I put that MTA inline, it drops to 1.5-1.8 Mbps down and about 500 Kbps up.  Any ideas?  YES I did remove the device and was able to regain the speed so there appears to be a throttle in there.  It is a Centillium device with a Motorola modem ahead of it and a D-Link wireless router behind it..

Any help is appreciated..

TOM

I can't tell you why the problem is happening, but I can make a suggestion that may help.

Add a switch to the mix or use the switch on the D-Link if it has one.  Here's an example setup:

Cable Modem >> Router/Switch  >> Network (MTA and computers)

If the DLINK has a built in switch...reverse the D-LINK and the MTA.  If you are worried about putting the MTA behind a router, you may be able to assign it to the DMZ (if the router has this capability).

I hope this helps,

ColdFused

Thanks for the suggestion.  It appears that AT&T likes to reserve x amount of bandwidth for a 'stellar' call experience.  When we started to talk about overall speed, the tech said they ONLY care about upload speeds.  I tried to reason with him that it is a two way street.  He WAS agreeable and said he would lift our service to a level 3 (we were at 1) and that the TA trains itself to our usage needs.  STILL 1/4 of my bandwidth available??  If we still have issues after 4 days, he'll attempt to push us to a level 4 service..

This new arrangement works like a charm.  I get back my d/l speeds (even better upload) and the VOIP still appears to function properly.  Of course if we ever have to troubleshoot it, they'll be a little miffed that it 'is not according to our recommended specs'!!

They said they are going to call me again in a few days to see if it is any better.  I'll not hold my breath on that one.

Thanks ColdFused

TOM

If you provide me with a phone number of e-mail address, I'll have an AT&T tech give you a call.  I sent your post to the AT&T CallVantage group and a tech called me looking for contact information for you.

Roger Marks

AT&T Information Research Center