$231.00 $220.00
Aastra 53M6 Expansion Module - for 53i, 55i, 57i and 57i CT IP PhonesAastra Expansion Modules provide increased call control and flexibility to Premium Series IP Phones.The 536M Expansion Module is designed to increase the power and flexibility of the Premium Series SIP telephones. Up to three modules can be used with the 53i, 55i, 57i or 57i CT telephone to create a powerful, feature rich console option, adding up to 108 extra feature keys/LEDS to your Aastra phone model.The 536M modules shares power and signaling with the phone, eliminating the need for additional wiring. Designed for receptionists, administrative assistants, call center agents, power phone users, and executives who need to monitor and manage a large volume of calls on a regular basis, the 5i Series Expansion Modules provide an intelligent choice for all Enterprise IP environments.
