Aastra Usa Inc Aastra 5i Series Expansion Module, 60 Keys With Led (3 Pages With 20 On Each Pa

Manufactured to the Highest Quality Available.
With True Enhanced Performance.
Latest Technical Development. The 560M expansion module is designed to increase the power and flexibility of the 5i Series SIP telephones. Up to three modules can be used with the 57i or 57i CT telephone to create a powerful, feature rich console option. More »