AT&T 929 - Manual (Page 8)

6
Installation
Set the tone/pulse switch. If you have touch tone service, set
the switch to TT (tone). If you have dial pulse (rotary) service,
set the switch to DP (pulse).
Connect the telephone line cord to the telephone. Plug the
telephone line cord into the jack labeled
LINE IN and route it
into the groove on the telephone base as shown below. If you
subscribe to high-speed internet service (Digital Subscriber
Line - DSL) through your telephone line, you must have a DSL
filter between the telephone base and the telephone wall jack.
The filter will prevent noise and caller ID problems caused by
DSL interference. Please contact your DSL service provider for
more information about DSL filters.
3.
4.
Telephone wall jack
Telephone line cord
DSL filter (not included)
required if you have DSL
high-speed internet service.