ADTRAN 1200051L6 User Manual
Page 25
Chapter 2. ISDN Service
61200051L1-1D
ISU 2x64 Dual Port ISDN Service Unit User Manual
11
B1 (previously Generic Data B)
•
1B service
•
Data only
•
One directory number
Capability C (previously Generic Data C)
•
1B service
•
Alternating voice and data
•
One directory number
I2 (previously Generic Data I-1DN)
•
2B service
•
Data only
•
One directory number
I2 is not available for services provided by a Northern Telecom switch. Two
directory numbers are required for 2B operation. In this case, use
Capabil-
ity R.
J3 (previously Generic Data J-1DN)
•
2B service
•
1B alternating voice/data, 1B data only
•
One directory number
J3 is not available for services provided by a Northern Telecom switch. Two
directory numbers are required for 2B operation. In this case, use
J2
.