The AT&T ATT-SB67108 SynJ 4-line Accessory Handset is DECT 6.0 Zero blind slot digital technology. AT&T SynJ SB67108 Cordless Expansion Handset for the AT&T SynJ SB67138 & SB67158 Small Business Phone System. DECT 6.0 Zero Blind Slot Digital Technology. 1 to 4 Line Capability. Push-to-Talk Intercom—From Base to Handset and From Hanset to Handset. Expandable System (use up to 10 cordless handsets through a single phone jack). 30 name and number Caller ID history. DSL Subscribers may need to us a DSL Filter. For optimal performance batteries should be charged for 16 hours prior to use. AT&T 4-Line Accessory Handset.

Features:

1. Handset for the ATT-SB67118 and SB67138
2. 1 to 4 line capability
3. DECT 6.0 Zero blind slot digital technology
4. Unsurpassed range - redefining long range coverage and clarity
5. Push-to-talk intercom - from base to handset and from handset to handset
6. Expandable system (use up to 10 cordless handsets through a single phone jack)
7. Intercom and call transfer between handsets and base station
8. 10 Speed dial and 10 intercom number locations
9. 3 Party conferencing
10. Handset speakerphone
11. Selectable ringtones
12. Handset, speakerphone, headset and ringer volume control
13. Last 10 number redial
14. 100 Name/number phonebook directory
15. Blue backlit keypad and display
16. Mute
17. Hold
18. Chain dialing
19. Headset compatible (2.5mm jack)
20. Caller ID/ Call waiting features
21. Caller ID displays on the handset and base
22. 50 Name/number caller ID history
23. Replacement Battery: BATT-27910