HP 0231A63N - MSR 16-Channel Voice Processor Module (VPM) - Performs voice traffic compression/decompression, echo cancellation (EC), and comfortable noise generation (CNG) - Plugs in the VPM slot on the motherboard Retail
HP 0231A63M - MSR 24-Channel Voice Processor Module (VPM) - Performs voice traffic compression/decompression, echo cancellation (EC), and comfortable noise generation (CNG) - Plugs in the VPM slot on the motherboard Retail
HP 0231A63P - MSR 8-Channel Voice Processor Module (VPM) - Performs voice traffic compression/decompression, echo cancellation (EC), and comfortable noise generation (CNG) - Plugs in the VPM slot on the motherboard Retail
HP JD600-61101 - MSR 16-Channel Voice Processor Module (VPM) - Performs voice traffic compression/decompression, echo cancellation (EC), and comfortable noise generation (CNG) - Plugs in the VPM slot on the motherboard Retail
HP JD601-61101 - MSR 8-Channel Voice Processor Module (VPM) - Performs voice traffic compression/decompression, echo cancellation (EC), and comfortable noise generation (CNG) - Plugs in the VPM slot on the motherboard Retail
HP 0231A64P - MSR50 multi-service module assembly - Has module slots for security and voice service processing - Includes four VPM module slots, one VCPM module slot, and two ECM module slots Retail
