Page 436 of 894 NT7D16 Data Access card
553-3001-211 Standard 2.00 September 2004
Note: If Call Detail Recording (CDR) is required, use separate outbound
and inbound Modem Pools.

Mode 3

This mode should be selected when the DAC is connected to a Hayes-1200
modem for inbound Hotline operation. It is recommended that mode 1 be
used for inbound Hotline operations if some other modem is available.
However, if only Hayes-1200 modems are available, then this mode could be
used as a last resort.
Configuring Hayes 1200 for mode 3
For Hayes 1200 modem, set the following parameters in LD11:
DEM DTE
PRM OFF
DTR ON
HOT ON
To configure this modem, set the configuration switches as follows:
• all switches to UP position, except for switch 4. Switch 7 should be UP
when using RJ-11 jack.
Programing DAC for mode 3 in service change LD11
The DAC must be configured as R232 (the Autodial feature is used for this
mode). The DAC must not be configured as an ADM trunk.

Selecting the proper mode for Gateway connectivity

Select modes 4, 5, 6, and 7 when the DAC is connected to different types of
gateways for inbound and outbound operations. The term gateway refers to
any equipment that has the following characteristics:
• The equipment must be a DCE.
• The equipment does not drive RI lead (optional, the DAC ignores this
lead).
• The equipment must drive DCD lead dynamically.
• The equipment drives DSR lead (optional).