Zhone 100 - Modem and Call Director Functions

2 Description
980-001-0210G NetPath 100 User’s Manual - Installation Guide 2-11
June
1999
Modem &
Call Director
The integral on-board modem can be switched to any one of the interfaces of the Net-
Path 100 by the call director. The call director connects the modem to the Base module,
Optional ISDN Adapter module, AUX 1 Port, or AUX 2 Port.
In this way, the modem is used for out-of-band trap reporting (NetPath 100 Base mod-
ule, Option module or DTE device connected to an AUX Port) and accepts incoming
calls for management access of the NetPath 100, DTE device or any other device con-
nected to an AUX Port.
Figure 2-9 shows a block diagram of the Modem and Call Director.
Fi
g
ure 2-9 Modem & Call Director Block Dia
g
ram
On incoming calls, the modem-to-interface assignment is made based on the DTMF
code detected after the NetPath 100 line interface goes off-hook and returns a second
Dial Tone.
DTMF code selections are shown in Table 1.
Modem parameters may be modified in the database as part of the configuration.
The configuration also includes a periodic self-test option for the modem and a dial
tone test for the dial line (performed every four hours), with results indicated on the
status screen, and failures reported as a Trap on the dedicated facility.
Line
interface
Call Director
Dial
Tone Gen
Modem
DTMF Det
Dial
Line
Base
Option
Aux 1
Aux 2
Table 2-1. Call Director DTMF Codes
Interface DTMF Code
Base module (CSU) 1
Aux 1 Port 2
Aux 2 Port 3
Option Adapter Module 4
Defaults to Base
module after timeout.
All Others