The high performance Telematrix 31139 3100MW5 is a part of 3100 Series  Analog Corded Phones with  1 Line, 5GSK, MW in color Ash. 

Variant: 3100MW5 Ash 

Features:

• Optional professional-quality speakerphone
• OneTouch voice mail retrieval button technology on most models
• 10, 5 or 0 programmable guest service keys
• Compatible with all major PABX systems
• 3-way conference calling (2-line models only)
• Convenient data port
• 3-step speaker and handset volume control
• High/Low ringer volume switch
• Full-length custom-tailored faceplates
• Industrial-grade construction with matte finish
• Non-slip base
• 5-year warranty
• Available in Ash or Black

SPECIFICATIONS:

Installation Includes

• RJ11 Line Cord (for 1-line telephones)—12 ft/3.66 m
• RJ14 Line Cords (for 2-line telephones)—12 ft/3.66 m
• Handset Coil Cord—9 ft/2.25 m
• Optional Wall Mount Bracket (not included)

Line, MW, and Ringer Specification: 

• Line Voltage 24-52VDC (+/-)
• Line Current 20mA-80mA
• Auto detect for 90VDC Neon or Low Voltage LED Applications
• Ringer Equivalence—0.6B

Certification:

• FCC Part 68, FCC Part 15 & UL 1459 Ref.
• ADA/FCC Hearing Aid Compliant

IN THE BOX:

• 3100 Series base
• Handset
• 12-foot line cord
• 9-foot coil cord
• Faceplate
• Overlay

Dimensions: 8.5” L x 3.5” H x 6.75” W inches

NEW IN THE BOX