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Page 58 of 80
Features and services
Dedicated modems
553-2731-100
Standard 5.00
Provision The DDN and hunt group of the ADM/modem pair are entered in
the office data using LD 11. A 500-telephone line card is required to establish
the incoming call connection on the analog side (to analog trunk). The
number of pooled modems to be supplied is determined according to
customer utilization requirements, calculated by using Meridian Data
Features: Traffic Engineering and Configuration (553-2731-151). Modem
pools must be organized according to modem types, i.e., modems of the same
speeds and modulation shall be placed in the same pool.
Interaction Assign the analog DN of the modems into the hunt group. (The
analog DN is the number assigned to the line card that is connected to the
analog end of the modem.) It is possible to configure the inbound modem
pool with Ring Again; however, this is not recommended due to the
possibility of tying up trunks and time slots.
Description This configuration allows dial-up or Hotline access to a
voice-grade dedicated facility for outgoing data calls. Each dedicated modem
is connected to a stand-alone ADM which is connected to an odd-numbered
port on a DLC in a peripheral equipment shelf. The DLC is assigned a DDN
which any data station, equipped with an SL-1 set/ADM pair, can dial up for
first-come first-served modem access.
The Ring Again queuing feature can also be applied by data callers who
encounter a busy modem pool at the time of dialing (see "Ring Again" on
page 52).
Provision The DDN of the ADM/modem pair is entered in the office data
using LD 11.
Limitations When an unconditioned voice-grade line facility is used, a data
call placed through the modem is limited to a maximum transmission rate as
determined by the modem capability or by the limitations of the
unconditioned line.
April 2000
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