Connecting to modem

I’m trying to set up the dialer to use a standard (non-Win) modem. It does
know to try /dev/ser3, but with the terminal turned on, it appears not to be
listening (or replying).

Is there some other configuration that needs to happen? If so, where is it

If not, I noticed that the Class is listed as “Communication (Unknown)” - is
there some other problem?

The relevant output of pci -v yields:

Class = Communication (Unknown)
Vendor ID = 14f1h, Conexant Systems, Inc.
Device ID = 1059h, HCF 56k Data/Fax/Voice Modem (Worldwide)
PCI index = 0h
Class Codes = 078000h
Revision ID = 8h
Bus number = 0
Device number = 12
Function num = 0
Status Reg = 290h
Command Reg = 4h
Header type = 0h Single-function
BIST = 0h Build-in-self-test not supported
Latency Timer = 20h
Cache Line Size= 0h
PCI IO Address = 0h length 8 disabled
Subsystem Vendor ID = 148dh
Subsystem ID = 1059h
Max Lat = 0ns
Min Gnt = 0ns
PCI Int Pin = INT A
Interrupt line = no connection
Capabilities Pointer = 40h
Capability ID = 1h
Capabilities = 4822h - 0h