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GLX
Minimum Configuration 
3 x 8
Max 6 x 12

GLX Standard tel
GLX Exec tel

GLX Exec

GLX Plus Phones
Minimum Configuration 3 x 8
Max 6 x 12

GLX 

GMX  Phones
Minimum Configuration 4 x 8
Max 24 x 48

Intertel Axxess
Minimum Configuration 4 x 8
Max 96 x 160

GMX DVK 24 

Intertel Axxess

Premier Phones
Minimum Configuration 4 x 8
Max 96 x 160

Premier 24d

Premier Phones
Minimum Configuration 4 x 8
Max 96 x 160

Premier