Multi-port attenuator for Total Access 600 and 900 series IADs. Addresses an issue present in some vendor"s multi-line phone systems by simulating added loop length on the FXS ports.Hummingbird Networks stocks New Adtran 1203602L1. Shop confidently knowing Hummingbird Networks is the #1 Authorized Adtran Partner for providing New Adtran products. We have been selling New Adtran 1203602L1 for over 10 years and we stock over 1,000 line items of Adtran parts. Hummingbird Networks ships Adtran 1203602L1 worldwide. When you order a 1203602L1 securely online, your order for Adtran 1203602L1 will ship same day in most cases.You can search our site to buy new Misc. or refurbished Misc. parts.If you still can"t find the Adtran parts you need, call us at 866-551-3278 and one of our Adtran specialists will help you immediately. We look forward to helping you with all your Adtran Misc. needs. Your new 1203602L1 includes Adtran"s full certified factory warranty and award winning customer service.Looking to sell your used 1203602L1? Hummingbird Networks can buy back your used 1203602L1. Call us for more details on how to sell your used Adtran today!