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Table 20 ISDN NT/TE Configuration Example
ISDN
Device
Types of ISDN Switches
There are many different ISDN switch types from different vendors in the world. The PRI
interface card enables the X2002 to communicate with the following PRI switches.
• 4ESS - AT&T 4ESS switch type for the U.S. (ISDN PRI only)
• 5ESS - AT&T 5ESS switch type for the U.S. (ISDN PRI only)
• DMS - NT DMS-100 switch type for the U.S. (ISDN PRI only)
• NI2 - ISDN US NI2 PRI (TR 1268)
• NET5 - NET5 ISDN PRI switches (Europe)
• AUS - Australian TS014 switches (ISDN PRI only)
• Q.SIG
The BRI interface card enables the X2002 to communicate with the following BRI switches.
• 5ESS - AT&T basic rate switches
• NET3 - Euro-ISDN switches (UK and others)
• AUS - Australian TS013 switches
Q.SIG
Q.SIG is a protocol used for ISDN PRI voice signaling. Q.SIG enables the X2002 to connect
PBXs and central office switches (COs) using the Q.SIG protocol. The X2002 can be a Q.SIG
master or Q.SIG slave.
• Master - is responsible for layer 2 signaling and initiates the negotiation.
• Slave - responses master's signaling.
You must connect a Q.SIG master device to a Q.SIG slave device. An example of a Q.SIG
configuration is shown next.
Figure 105 Q.SIG Configuration Example
ISDN
Device
X2002 User's Guide
T1/E1
NT mode
TE mode
T1/E1
Q.SIG
Q.SIG
Slave
Master
ISDN
Device
ISDN
Device
Chapter 7 Server
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