Modules included GCD-CP10, GCD-8DLCA, and GCD-4COTB.  The NEC SV9100 6-Blade 2U Chassis CHS2UG-US is a business VoIP system that supports SIP trunking and includes modules that enhance its functionality. This model was manufactured in Thailand and is available on eBay. It is part of the NEC SV9100 series, known for its reliability and advanced features for office communication systems.