• White Communications
  
• Verizon
  4511 Willow Rd
• Ryco Solutions
  40 California Ave
• Networkanatomy
  74 W Neal St
• Maverick Networks
  4782 Sutter Gate Ave
• Matrix Technologies
  4309 Hacienda Dr # 550
• Gte Customer Networks
  4511 Willow Rd # 3
• Comverse Information System
  
• Centergy Solutions
  6920 Koll Center Pkwy
• Assist Telcom
  5673 W Las Positas Blvd # 207
• A & E Velocitel Inc
  4160 Hacienda Dr # B