Connect Modem to Telephone Network

External Modem Option Settings

The U.S. Robotics Sportster Model USR 33.6 EXT external modem is the recommended external modem. A locally obtained, type-approved external modem may be used. Contact your Avaya Inc. representative for information.

To set the options on the external modem:

1.If a non-U.S Robotics Model 839 modem is installed, refer to the setup instructions provided with that modem. Refer to Table 29: Modem Fields on page 148 while setting up the modem. Go to Step 4 to complete the modem administration.

2.If no modem is installed, skip to step 5. If a U.S Robotics Model 839 modem is installed, perform the following.

3.Use Table 28 to set the 8 option switches on the U.S. Robotics modem

Table 28: U.S. Robotics Model 839 External Modem Dip Switch Settings

Dip

Setting

Description

Switch

 

 

 

 

 

1

UP

Data Terminal Ready normal

 

DOWN

Data Terminal Ready override

 

 

 

2

UP

Verbal result codes

 

DOWN

Numeric result codes

 

 

 

3

UP

Suppress result codes

 

DOWN

Display result codes

 

 

 

4

UP

Echo offline commands

 

DOWN

No echo, offline commands

 

 

 

5

UP

Auto answer on first ring or higher if specified in NVRAM

 

DOWN

Auto answer off

 

 

 

6

UP

Carrier detect normal

 

DOWN

Carrier detect override

 

 

 

7

UP

Load NVRAM defaults

 

DOWN

Load factory defaults

 

 

 

8

UP

Dumb mode

 

DOWN

Smart mode

 

 

 

 

 

 

4.Type change system-parameters maintenance and press Enter. Scroll to page 3 of the form.

Issue 10 June 2005 147

Page 147
Image 147
Avaya CMC1 manual External Modem Option Settings, Echo offline commands, Carrier detect normal, Load Nvram defaults