... on calls, redial, volume regulation, shift of languages, changing card during a call, and speed dial; Dynamical display of ... or banned dialing numbers can be set; Support adding long-distance prefix and/or IP prefix automatically; Flexible control method of ... operationsLifespan of Metallic Keypad> 1,000,000 operationsLifespan of Card Reader> 500,000 insertionsMTBF> 10,000 hoursDimensions622mm X 310mm ...