UTS Policies: Modems
Who may use DU modems?
The University of Denver's modem pool may be used by active
students, active employees, and retired employees as defined in
the Network
Access Policy. A current DU ID and PIN are required. For Windows
dial-up networking, type your DU ID in the User name
box and your passcode in the Password box.
Current DU IDs, also know as Banner IDs, are 9-digit numbers
beginning with the digits 87. Effective July 1, 2002,
Social Security Numbers and older DU IDs will no longer
work.
DU IDs and passcodes are managed by the Office of the Registrar
(for students) and Human
Resourses (for employees). Changes in passcodes made by these
offices will not be available for accessing modems until the
following day.
Modems are divided into two pools:
- 303-376-0500 -- Accesses a pool of 176 modems with a
120-minute time limit.
- 303-376-0676 -- Accesses a pool of 16 modems with a
15-minute time limit.
Our dial-up modem lines are frequently in high demand. Time
limits are enforced to assure that everyone has an opportunity
to access them. Two classes of service are available:
- 120-minute time limit (telephone: 303-376-0500) --
Time limit varies between 2 and 6 hours depending on modem
availability. Modem use is checked every 5 minutes. If the limit
is more than 120 minutes and 4 or fewer modems are available,
the limit is lowered by 15 minutes. If more than 4 modems are
available and the limit is less than 360 minutes, the limit is
increased by 15 minutes. After the limit has been adjusted, any
connections that have been established for longer than the limit
are terminated.
- 15-minute time limit (telephone: 303-376-0676) --
Modem use is checked every 5 minutes. Any connections that
have been established for more than 15 minutes are
terminated.
Modem pools have been upgraded to V.92,
the new dial-up modem specification from the ITU (International
Telecommunications Union). V.92 modem connections offer the
following performance improvements:
- Modem-on-hold (MOH) allows for a dial-up connection to pause while
an incoming call is answered or while a call is iniated by the user.
Requires the user to have call waiting service enabled.
- V.44 compression
protocol delivers data rates between 10 and
120 percent faster than those achieved by the existing V.42bis
compression protocol.
- Quicker connect times.
Preliminary tests show that, on average, connect times are 30 percent
to 40 percent faster with V.92 than with V.90.
- PCM upstream
boosts the data rates from the user to the ISP thereby reducing
upload times for large files and e-mail attachments.
- NetWaiting
(Similar to MOH) bundled with the Conexant V.92 modem chipset
and driver allows the user to determine the status of an incoming
call. This feature also requires the user to have call waiting service
enabled.
More information can be found at http://www.v92.com/
DU modems support the following protocols:
Speed and Modulation:
- V.92
- V.90 (56 kbps; however, because of FCC regulations, maximum
speed is 53 kbps.)
- V.34 (33.6 and 28.8 kbps)
- V.32 Terbo (19.2 kbps)
- V.32bis (14.4 and 12 kbps; 9600, 7200 and 4800 bps)
- V.32 (9600 and 4800 bps)
- V.22bis (2400 bps)
- V.22 (1200 bps)
- Bell 212A (1200 bps)
Error Correction:
Data Compression:
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