Cognitive-behavioral therapy may not be suitable for some patients. Those who do not have a specific behavioral issue they wish to address and whose goals for therapy are to gain insight into the past may be better served by psychodynamic therapy.
GSM MODEM. A GSM modem is a specialized type of modem which accepts a SIM card, and operates over a subscription to a mobile operator, just like a mobile phone. From the mobile operator perspective, a GSM modem looks just like a mobile phone.GSM Modem comes in various interfaces, such as PCMCIA Type II, USB, and Serial.
A modem is a device to transfer data over another non-data medium. In the old days this was often a phone line, meant to transfer speech, zero's and one's were translated into audible tones to pass over this medium and reverted back on the other side. Different tones for different directions and to increase bandwidth. Today DSL modems do similar things in a audio spectrum a bit outside the normal speech frequencies. Filters are used to avoid disturbances. Most customer access devices combine both a modem and a router in the same device.