https://www.telecomex.com/product_detail/avaya-partner-308ec-rel-30-refurbished-103g9-60557a
60557A-Avaya PARTNER 308EC Rel 3.0 Refurbished (103G9, 60557A) - Telecomex
The Avaya PARTNER 308EC Expansion Module Release 3.0 (60557A) adds capacity for 3 outside lines and 8 stations to your PARTNER ACS System.Supports Caller ID...
avaya partnerrelrefurbished