Sales Avaya Center
Tel: +662-226-4300 Ext: 212, 203, 274
Fax: +662 223 8289

Consulting Avaya Center
Tel: +662-226-4300 Ext: 175, 403, 320
Fax: +662 223 8289

Marketing Center
Tel: +662-226-4300 Ext: 461
Fax: +662 223 8289
E-mail: marketing@chevalierthai.com

Service Center
Tel: +662-226-4300 Ext: 333
Fax: +662 626 8776

Service Hotline
+662 626 8777
E-mail: contactcenter@chevalierthai.com