Getting "All circuits busy" Modem Message?

By Jose Dominguez (jad@network-services.uoregon.edu)
and John Kemp (kemp@network-services.uoregon.edu)

At the beginning of fall term, users dialing the UO modem pool via 346-6520 didn't get a normal busy signal when all lines were in use. Instead, they heard a prerecorded "all circuits busy" message.

After extensive testing and debugging, staff from Network Services, Telecomm Services and US West determined that this unusual response was the result of several factors, including recent upgrades to both the telephone switch serving the City of Eugene and the PBX serving the UO, as well as the way the modem pool was configured.

To correct the problem, Network Services and Telecomm Services plan to reengineer the modem pool configuration. Corrective procedures should begin during the winter break and could extend into the first weeks of the winter quarter. We apologize in advance for any inconvenience this may cause.

Forthcoming Changes

The addition of newer faster modems and the change in configuration of the dialin lines should greatly improve the quality of service to the UO dialin community.The new configuration (shown in the table below) differs from the old one in two important ways:

1. The 346-3565 number will convert to a V.90-capable modem pool, and expand to include an additional 64 high-speed modems. These additional and faster modems should considerably ease the burden that has been seen on the 346-6520 number.

2. The 346-1586 number goes away. These older, slower modems have become less useful over time. Users previously operating at 14,400 and using the 346-1586 number might want to consider upgrading to the V.90 standard.