Specifications

2-22
Reference Guide
Model No.
Running Head
ISDN Primary Rate Interface (PRI) Server Applications
Figure 2-12. IAD in a Wireless Base Station Application
Base Station to MSO voice traffic can be compressed to efficiently backhaul traffic, which
reduces line charges. An alternative to this application would be to transport the voice from
the Base Station to the Hub uncompressed over the Fractional T1s and E1s and then perform
the voice compression function in the IAD at the hub.
2.6 ISDN Primary Rate Interface (PRI) Server
The PRI Server Card provides flexible access and routing of PRI-based ISDN services. The
ISDN PRI Server can be used for enabling applications such as Video Conferencing, Video
Broadcast, ISDN Grooming, and Fractional PRI provisioning. The PRI Server card supports
B channel bandwidth of 56K, 64K, 384K, 1536K and Multi-Rate speeds where available.
Multi-Rate speeds allow the PRI server card to select calls in increments of 64Kbps. In areas
where Multi-Rate is not supported by the local ISDN switch, an Inverse Mux (IMUX) Server
Card should be used to aggregate individual 64Kbps calls.
The PRI card can be utilized with the 8213 Switched HSU Card for RS-366 and V.25bis
bandwidth on demand dialing. Additionally, regular HSU cards can be used for DTR dialing.
The PRI server card supports both the Network and User side protocols associated with ISDN
PRI services and therefore the IAD can be used to both provision and terminate ISDN calls.
The following components make up the BRI/PRI solution:
•
One 881160 Multi-Server Card
•
One 65100 BRI/PRI Service Translation Software Package
•
Optional WAN Interfaces with associated Line Interface Modules
T1/E1
T1/E1
6 Fractional T1/E1’s
1
Base Stations
Base Station/Hub
Maint.
Phone
Radio
Equip.
E1/T1
E&M/
FXS
Cellular
Packet Data
Alarms
V.35
Aux.
Equip.
V.24
Main SwitchingOffice
(MSO)
2
3
4
5
6
Maint.
Phone
Radio
Equip.
E1/T1
E&M/
FXS
Cellular
Packet Data
Alarms
V.35
Aux.
Equip.
V.24
MSO
Switch
T1/E1
Data
ADPCM Engines at Base Station/Hub/MSO
IAD
IAD IAD