ADTRAN Express 5210, Руководство пользователя

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Chapter 10. Dial Backup Configuration
61200208L1-1 Express 5210 User Manual 10-5
Wait to Redial (REDIAL DELAY)
This option works in conjunction with the preceding R
EDIAL
C
OUNTER
. It selects the amount of time between redial attempts to
connect the backup line. The amount of time, which is manually
entered, can be up to 60 seconds. The factory default setting is 15
seconds.
DBU Card Configuration Options
The following selections are dependent upon the type of DBU card
installed (if any). If no card is installed or if the 4-Wire SW56 card is
installed, then the selections in this section do not appear.
ISDN DBU Card
When an ISDN DBU interface card is installed, select ISDN
O
PTIONS
to access the following ISDN configuration parameters:
Switch Type
Select which type of telco CO switch is providing your ISDN
service. There are four switch options:
L
UCENT
5ESS , DMS 100 ,
N
ATIONAL
, and NEC.
B-Channel Bit Rate (B-CH BIT RATE)
Select the channel bit rate for the ISDN service. Select 64
K
unless
your service only provides 56
K
.
SPID
Enter the service profile identifier ( SPID ) into this field. The SPID
is a sequence of digits identifying ISDN terminal equipment to the
ISDN switch when more than one ISDN set has been attached to
the same central office line. The
SPID is assigned by the telco when
the ISDN line is installed and normally resembles the phone
number.
Only the Lucent 5ESS switch is capable of recognizing a
point-to-point configuration, eliminating the need for a
SPID . All
other switch types require a SPID .
LDN
Enter the LDN . This seven-digit number is assigned by the telco
when the ISDN line is installed.