Am I using the dialup directive correctly?

This is what I have:

page WAN Routers group-compress <font size="+2">Cisco Routers</font> 172.16.98.250 dialup.tigr.org # ssh ntp DESCR:" :G-1"

group <font size="+2">Dialup Connections</font> dialup modem-bank 172.16.98.10 48 #

but all I seem to get is an error under bbgen: Error output: Confused - hostname 'modem-bank' cannot be found. Ignored

Dialup.tigr.org is the dns name of the router. If I set it up this way:

page WAN Routers group-compress <font size="+2">Cisco Routers</font> 172.16.98.250 dialup.tigr.org # ssh ntp DESCR:" :G-1"

group <font size="+2">Dialup Connections</font> dialup dialup.tigr.org 172.16.98.10 48 #

I do not get the error and the information displays but I only get yellow question mark icons.

I have not used the dialup function before but it appears to not be functioning as documented, or maybe I am not reading the documentation correctly. Thanks