Centrex Service

For a fixed monthly charge, Centrex ISDN provides a relatively cheap 64K or 128K connection, while regular Centrex business lines can be used for V.FAST or slower connections. By setting up a Centrex, you may make calls (within the same Central office) without incurring any per-minute charges. This is particularly important in these situations.
Voice grade (up to 28.8 Kbps)
Businesses can't take advantage of unmetered residential rates. For voice-grade connections, they must pay a per-minute charge, or install a leased line. Leased lines are quite expensive to install, and while the monthly rate can be pretty reasonable, it's still more expensive than Centrex service.
ISDN
ISDN connections charge a minimum of $0.01/minute; that would cost over $430/month per 56K channel for a permanent connection. There is a new personal ISDN tariff in place that is not metered during off peak hours, but is metered during business hours.
Voice grade or ISDN line can be attached to a Centrex. If you already have a Centrex, you can add a line to a Market.NET site. Otherwise, Market.NET can add a line from our Centrex to your site.

Pacific Bell Centrex rates

setup Centrex   $200 (up to 10 lines)

voice line      $70 + $5 for "classic features"

ISDN line       $150 (billed only if you disconnect in less than two years)
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