LBI-39039B INTRODUCTION
6
EDACS radio-to-PSTN calls are direct inward dial (DID) calls into the MD110, which are routed to the PSTN.
EDACS radio-to-PBX extension calls are DID calls into the MD110, which are connected to an MD110 extension. A
Least-Cost Routing (LCR) code is normally used to direct calls out of the MD110 to the PSTN. The LCR code precedes
the dialed number, such as the "9" typically used in North America to access an outside line. The LCR code is used by both
radio and MD110 PBX users. LCR provides for routing based on the number dialed. It can modify numbers when
necessary by inserting or deleting digits. It will wait for sufficient digits before passing them to a route, and will intercept
invalid called numbers. In some cases, LCR will route manually entered digits from the PSTN callers that represent a radio
ID. In many cases, External Destination codes are used instead of LCR codes to route calls to the PBX/PSTN.
Table 1 - EDACS Number Plan
On inbound calls, once the DISA dial tone is heard and an EDACS trunk selector has been entered, the EDACS number
plan (Table 1) represents the actual number that the user must enter to reach a radio.
I
M
6-Wire
4-Wire
Audio
Jessica
RS-422
EDACS
System
Administrators
PI
MD110
MUX
Interface
EDACS
T1/E1 ISDN
T1/E1 Audio
PSTN/PBX
Interface
PSTN
Extension
Interface
Extensions
EDACS
EDACS
Radios
Radio
C
P
I
M
EDACS
Multisite
Network
Modem
PSTN
MD110 Terminal
RS-232
RS-232
PI Admin Terminal
System Manager
RS-232
Audio
Cards
T1/E1
Audio
Cards
Figure 1 - MD110 Used in Jessica Application
00001-16382 LID
20000-22047 GID "2" prefix indicates GID
300001-316382 Digital LID "3" prefix indicates digital
320000-322047 Digital GID "3" prefix indicates digital
"2" prefix indicates GID
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