Specification AnsweringSystemType : Digital Brand : Grandstream BulletPoint1 : 48 telephone FXS ports with both RJ11 and 50-pin Telco connectors, as well as per port LED BulletPoint2 : Gigabit Ethernet and a backlit 128x32 graphic LCD display with support for multiple languages BulletPoint3 : 2 SIP server profiles per system and independent SIP account per port BulletPoint4 : Supported voice/fax codecs include G.711, G.723.1, G.726, G.729A/B, iLBC, T.38 Fax BulletPoint5 : Advanced carrier grade 128ms-tail-length line echo cancellation CompatibleDevices : Personal Computer ConnectorType : EPS ControlMethod : voice CoolingMethod : Air ExternallyAssignedProductIdentifier : 7903551283485 ExternallyAssignedProductIdentifier1 : 714752338013 ExternallyAssignedProductIdentifier2 : 0714752338013 HasCallerIdentification : 1 InterfaceType : SFP ItemDisplayWeight : 12.5 pounds ItemName : Grandstream High Density FXS Analog VoIP Gateway (Renewed) ItemPackageDimensions_Height : 10.414 centimeters ItemPackageDimensions_Length : 48.26 centimeters ItemPackageDimensions_Width : 34.29 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : voip-telephone-routers Manufacturer : GrandStream Material : Copper ModelNumber : WS-C3560X-48P-S NumberOfItems : 1 NumberOfPorts : 48 PartNumber : GXW4248-cr Pattern : Solid PowerSourceType : Corded Electric ProductDescription : This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon-qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee. ProductSiteLaunchDate : 2020-06-29T15:33:07.132Z UnspscCode : 43191500 Voltage : 100 volts WarrantyDescription : 90 days limited warranty Wattage : 200 watts