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If the network switch type is AT&T 5ESS (National ISDN)
Each LDN is given for four channels (CH A1 and A2, CH B1 and B2,
CH C1 and C2, CH D1 and D2)
or
Each LDN is different as a separate LDN is given for each channel.
The following shows the use of three ISDN lines for AT&T 5ESS
(National ISDN).
In case of each LDN is given for two channels.
ISDN Setup
Page: 2/3
Area Code
Local Number
A1:
408
9876532
A2:
408
9876532
B1:
408
9871356
B2:
408
9871356
C1:
408
9852464
C2:
408
9852464
D1:
408
9853141
D2:
408
9853141
Save
In case of each LDN is different as a separate LDN is given for each
channel.
ISDN Setup
Page: 2/3
Area Code
Local Number
A1:
408
9876543
A2:
408
9876544
B1:
408
9871234
B2:
408
9871235
C1:
408
9852468
C2:
408
9852469
D1:
408
9853245
D2:
408
9853246
Save
If the network switch type is AT&T 5ESS (Multipoint or Point-to-
Point Custom ISDN)
Each LDN is given for four channels (CH A1 and A2, CH B1 and B2,
CH C1 and C2, CH D1 and D2).
The following shows the use of four ISDN lines for AT&T 5ESS
(Multipoint Custom ISDN).
ISDN Setup
Page: 2/3
Area Code
Local Number
A1:
408
9876532
A2:
408
9876532
B1:
408
9871356
B2:
408
9871356
C1:
408
9852464
C2:
408
9852464
D1:
408
9853141
D2:
408
9853141
Save
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Chapter 1 Preparation
(Continued)
27
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