User`s guide

Deskset Settings 210
Synapse SB67030 Deskset and Accessories User’s Guide
Registering an Optional Cordless Handset
You can register only one AT&T SB67040 Cordless Handset and only one AT&T TL7600 Cordless Headset to a Deskset. When a
Deskset has cordless accessories, they are all part of the same extension, and only one device can be used at a time.
The Cordless Handset is not supported in Line Appearance mode.