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Server Cards IMACS System Release 5.1.6 4-7
ACS-PRI/BRI Card Introduction
Figure 4-5 highlights the ability of the system to be able to set the protocol between network
side and user side for each D channel it uses. Since the PBX can only run the user side
protocol, the system must run the network side protocol on the D channel connected to the
PBX. However, on the D channels connected to the carrier switches, the system must run the
user side protocol.
Figure 4-5. Network and User Side Protocols
Carrier A
ISDN Switch
Carrier B
ISDN Switch
User Side
User SideUser Side
Network SideNetwork Side
Network Side
IAD
CAUTION:
Fo
r
continu
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d
prote
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aga
inst
f
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ep
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of f
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se
Premisys Communications, Inc.
Model IMACS/600
T
5A
25
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23B+D 23B+D
NFAS 47B+D
ISDN PBX