Modems

There are many different scenarios and permutations with regards to physically wiring cable modem termination systems (CMTSs). You could have a sparse mode where upstream (US) ports on the CMTS are kept separate, a dense mode where signal is fed to multiple US ports, multiple CMTSs on the same physical plant, or different card densities. These combinations affect what happens when provisioning, maintaining, and troubleshooting. tech news

This paper describes the various components of the Merlin for GPRS G201 PC Card modem. The modem's LED (Light Emitting Diode) indicates when the Merlin for GPRS modem has located a network. If the LED is red, the modem is searching for the network. If the LED is green, the modem has located the network. tech news

This paper gives additional technical information that can be useful for using the eWON Embedded GPRS modem. GPRS operation is different from the common modem operation found in the eWON. The eWON embedded GPRS modem is a device from SIEMENS with reference: MC35. The device is dual band and supports standard GPRS communication as well as normal dual band GSM communications. tech news

This paper provides a functional overview of Alpha Micro GPRS Modem. Alpha Micro have taken the approach that customers who wish to move from dial-up designs to GPRS connections should need to make only minimal changes to any existing (and usually well tested) driver code. Consequently, once initialised, the Alpha Micro GPRS modem has the same ?look and feel? as a normal dial-up unit, responding to similar (if not identical) ?AT? commands, and returning standard responses. tech news

The GSM/GPRS wireless network combines the world?s leading wireless standard - the Global System for Mobile Communications (GSM) - with fast, packet-switched access to data networks such as the Internet. Providing this fast access is the General Packet Radio Service (GPRS). The AirLink GPRS modems are designed to operate in GSM/GPRS networks. Two data services are available in the GSM/GPRS networks: GPRS, a packet switched connection, and SMS, a short message service. tech news