 |
 |
 |
 |
 |
 |
 |
 |
|
|
|
|
|
|
|
|
|
MX PRI-BRI is telecommunication device designed to solve problems occurring when the "last mile" is to be overcome. When subscribers are being connected to a telecommunication network it is necessary to connect euroISDN subscribers in a certain location and not enough suitable cables are available. MX PRI-BRI offers a simple and economical possibility to connect a group of euroISDN subscribers to the telephone exchange through the E1 line.
The modular design of the device, capacity of which can be extended with a four BRI line step, is convenient in cases a new location is constructed. In the first stage a branch for a smaller number of lines can be built. This way the initial investment costs are reduced. Afterwards, as the interest in the services grows, MX PRI-BRI can be gradually extended with other BRI lines. MX PRI-BRI terminates BRI lines with S0 or Uko interface. Application MX PRI-BRI is connected via public or private telephone network to the public or private branch exchange. There may be a cable or radio connection. Subscribers of euroISDN type are directly connected to the MX PRI-BRI via S0 buses. MX PRI-BRI virtually fulfils the function of a "digital concentrator". Next MX PRI-BRI is connected to the outgoing PRI line.  Software MX PRI-BRI is delivered with two versions of software: these two software versions are used on the same hardware. Choice of the software version depends only on requested application and possibilities of the telephone exchange with connected MX PRI-BRI. Version V1 provides call routing due to the B-channel selected for the call. Version V1 is applicable to divide PRI interface to several BRI interfaces belonging to one subscriber - e.g. connection of special devices to the branch exchange. Version V2 provides call routing due to the called number. Version V2 is applicable to divide PRI interface to several BRI interfaces belonging to different subscribers. Version V5x is simple AN side of the V5.1 or V5.2 system. This version is applicable where outputs of V5.1 or V5.2 type are available on the exchange.
Configuration MX PRI-BRI is controlled and configured with a simple control program, which makes installation and maintenance of the equipment very easy. The program can set up a wide range of parameters of the equipment. All necessary configuration of MX PRI-BRI can be performed locally on PC via serial channel or remotely via ISDN line and ISDN card in PC. Diagnostics MX PRI-BRI is equipped with efficient diagnostic means of monitoring the activity. Basic information about the status of MX PRI-BRI is indicated with LED's on front panels of modules. More detailed diagnostic information is possible to obtain on PC via serial channel. Monitor of protocols A part of the delivered software is an integrated monitor of protocols that helps to put MX PRI-BRI in service and when needed helps to solve operational problems. The monitor of protocols offers a detailed log on the level of data link layer (layer 2) and DSS 1 signaling (layer 3). Mechanical design
MX PRI-BRI is built into the standard 19" rack with height 1U. In this case, capacity of the device is 4 BRI lines. MX PRI-BRI can be placed in the standard frames with transmission equipment. The rack 19" have its top and bottom parts manufactured of perforated sheet. Perforation holes enable heat removal from the boxes thanks to natural airflow.
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
MX PRI-BRI divides incoming PRI (30B+D) E1 line with DSS1 signaling to up to 15 BRI (2B+D, S0 or Uko) lines and optionally one PRI (30B+D) E1 line. To the BRI lines it is possible to connect small private branch exchanges that uses point-to-point mode or telephone sets, faxes, modems and ISDN card in PC that uses point-to-multipoint mode.
To the outgoing PRI line, it is possible to connect private branch exchange or next device of MX PRI-BRI type. Calls that are not connected to some subscriber on BRI lines is possible to connect through PRI line to the next MX PRI-BRI device and there to the destined subscribers.
MX PRI-BRI is built into the standard 19" rack with height 3U. In this case, capacity of the device is up to 15 BRI lines. Capacity of the device can be extended with a 4 euroISDN line step.