Introduction and Requirements for Integration
Determining the Placement of the SID
The Switch Integration Device (SID) and the MAP/5, MAP/40, or MAP/100 represent local devices. Place the SID and the MAP in the same area and close enough together so the RS-232 cable supplied with the SID can connect to the computer. During installation, the AT&T technician will place the SID and the MAP in the location specified by the customer.
For the link between the MCI port and the INTUITY System, AT&T uses an Electronic Industries Association (EIA) RS-232-C serial data electrical interface. AT&T supplies an EIA standard RS-232 cable with a 25-pin connector. You cannot directly connect the cable to the switch. The MCI p ort on the backplane of the switch has a 25-pair connector. AT&T supplies the 25-pair to 25-pin adaptor required to connect the RS-232 cable to the backplane of the switch. The customer or the switch vendor representative must connect the adaptor to the switch. AT&T assumes responsibility only for the RS-232 cable that connects to the SID.
If the distance from the switch to the SID is longer than the RS-232 cable reaches, you, the customer, must supply a cable that attaches between the AT&T supplied cable and the NEAX 2400 MCI port adaptor. Use a cable that meets the EIA RS-232 standards, including the 50 feet maximum cable length. Failure to meet EIA communication standards may cause data transmission errors. If you cannot reach the switch with the 50 feet maximum cable length, you, the customer, must determine and engineer a method of connecting the SID and the switch, such as using a limited-distance modem. AT&T does not recommend any particular methods.
