ADTRAN 1200051L6 User Manual
Page 143
Appendix F: Ordering ISDN Without IOCs
61200051L1-1D
ISU 2x64 Dual Port ISDN Service Unit User Manual
129
LOCAL INTERFACE REQUIREMENTS
Physical Interface
•
ISDN Basic Rate Interface (BRI) line
•
U-interface reference point
•
2B1Q line coding
ISDN service must be provided from one of the following CO
switches and protocols:
The interface provides the ability to allocate one dynamic (TEI)
per phone number.
Local Service
•
Bearer capabilities:
- Circuit mode voice service for speech and 3.1 kHz
audio.
- Circuit mode data service for 56 kbps and 64 kbps
unrestricted data.
•
Two simultaneous calls supported on the interface. Any mix
of speech and data bearer capabilities is supported for both
bearer channels on incoming and outgoing calls.
•
Service provided inside the LATA for the bearer capabilities.
•
Long distance access for the bearer capabilities to and from
the long distance providers of choice.
Switch
Protocol
AT&T 5ESS
Custom (5E6 or later software)
National ISDN-1
Northern Telecom DMS-100
BCS-32 or later software (Pvc1)
National ISDN-1 (Pvc2)
Siemens EWSD
National ISDN-1