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Preliminary November 4, 1998
MAX 4000 Series Hardware Installation Guide
Getting Acquainted with the MAX
The items in your MAX package
PIAFS-16 card
The PIAFS-16 card (Figure 1-9) provides up to 16 PIAFS WAN sessions. You can install a
maximum of six PIAFS-16 cards in the MAX.
Figure 1-9. PIAFS card
IDSL card
Ascend’s ISDN Digital Subscriber Line (IDSL) card (Figure 1-10) appears as BRI/LT in the
VT100 menu screen and supports incoming and outgoing voice calls. To support outgoing
voice calls, the connected Terminal Equipment (TE) must use Q.931 en-bloc dialing to send all
dialed digits to the MAX in one block (the ISDN Call Setup message), rather than send one
digit at a time.
The MAX receives outgoing call requests from attached ISDN TE and routes voice calls to the
Public Switched Telephone Network (PSTN) over a T1 line or ISDN PRI line. The MAX
receives incoming voice calls and uses Dialed Number Identification Service (DNIS) to route
them to TEs connected to IDSL cards.
Figure 1-10. IDSL card
