I have a similar issue going on with our only POP running USR CT1 gear (currently old quad units - planning to move to HiperDSP later this year). When customers call in from the native exchange area (ie. same NXX-NXX access number), it works flawlessly. However, when they call in over an EAS circuit (NXX from telco 1 to NXX from telco 2), it's nothing but problems. It's not just a v.90 issue either, as I have v.90 disabled on one CT1 span for our super-rural "problem" users who can't stay connected at v.90 speeds. So, it happens across two chassis, four CT1 spans, all quad/netserver/T1 gear. It seems to be the worst with Winmodems, even Lucent based ones (that I generally have the best luck with). Hopeless with Aureal/Motorola "SM56" modems. With or without v.90 disabled on the client end. Could this have anything to do with the ANI digits I get from the telco (I know I'm getting them as I can hear them rattle through before the connect with the T-Berd)? Thanks again for any tips! Brad On Thu, 20 Jun 2002, Kevin Hemsley wrote:
A while back, the phone company moved the old copper T1 circuits at one of our POPs onto fiber. From that day forward, *Many* users have experienced connection problems: can't connect, frequent disconnects. These users can dial other POPs and connect fine. Multiple trouble tickets with the phone company have resulted in multiple switch technicians going through the phone company's switch configuration, but none have found anything wrong. Some customers seem to connect fine, others can't connect at all. The over-all utilization of this POP has dropped 40% - 50% since the switch to fiber. Users began calling out other POPs. The problem "seems" to be related to where a customer calls from. We have provided phone numbers of example customers who are experiencing the problem to the phone company, but they haven't been able to find anything.
Has anyone ever experienced anything like this? We are running multiple chassis all running Hiper DSPs at this POP.
Thanks, Kevin. ------------------------------------------------------ Kevin Hemsley Systems Engineer kev@ida.net NF7J
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