
386 Appendix B: ISDN Overview
Enterprise Edge 2.0 Programming Operations Guide P0911588 Issue 01
Method 2:
Use incoming Call by Call (CbC) Service routing to map the call type to the
DISA DN. Refer to Call Routing on page 128 for more information.
With FX, INWATS, 900, and SDS service types, either a Service Id (SID) or a
CDN is mapped to Target Line Receive Digits. This is programmed under
Call by Call Service routing on page 130. DISA may be accessed by having
the SID or CDN map to the DISA DN. This example has a Receive Digit
Length = 4,
DISA DN = 1234, and CbC Routing with (Service Type = FX, Map from SID
= 2, Map to digits = 1234).
A call presented to the Enterprise Edge system with service type FX and
SID 2 will be handled as follows:
• The ISDN setup message will specify FX with SID = 2
• The FX SID = 2 will be mapped to DISA DN digits 1234
ThecallwillbeansweredwithDISA.
Program ISDN equipment
PRI modules support various applications that are enabled by PRI. For a list of the
type of applications that are supported, refer to theEnterprise Edge Feature
Programming Telephone Guide.
Terminal equipment for BRI cards
ISDN devices and terminals connected to the Enterprise Edge system must be
configured under Services, Telephony Services, Loops. You choose directory
numbers for ISDN equipment from a pre-determined range of DNs (501-528). Any
of the ISDN DNs can be assigned to an S loop but each can only be assigned to one
loop and a single device.
DevicesonanSloop(BRIcardsonly)
Terminal equipment using an S loop must be assigned an ISDN directory number
(ISDN DN). This allows the TE to be assigned lines and to communicate with other
devices connected to the Enterprise Edge system. Each DN can be assigned to only
one TE and one loop.
You assign ISDN DNs to S loops from the Telephony Services subheading, under
Loops, DNs on Loop, Assign DNs.EachSloopcanbeprogrammedwitheight
ISDN DNs, but you cannot exceed a total of 28 ISDN DNs for the Enterprise Edge
system.
Loop DN (North America)
Once you have assigned ISDN DNs to a loop, designate one of the DNs as a Loop
DN. The Loop DN acts as a main ISDN DN and completes the configuration of the
loop.
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