Product : PBX
Part Involved : Panasonic D500
Summary: I gave a presentation about the basic concepts used in telephone systems
Scenario : The enviroment belongs to celebrate the anniversary of "Telecommunication Office of Maria Auxiliadora Hospital".
Company : Maria Auxiliadora Hospital of Peru (HMA).
Reference Date : October 2007.
At the right-down side of my blog, I have added an additional video about PBX founded in this visit "Panasonic D500 on HMA" and related about the presentation of the concepts taken were :
-E1 or Primary : It is a set of traffic channel grouped into the same physical connection, then there are 30 traffic channels and 2 signaling channel assocciated to this type of conecction. In the most of the cases the Telephone carrier provider install an end baloom containing the U-links connector into local client to establish the point connection to PBX with a 75 ohms (through the primary card). Every traffic channel is 64Kbps (like as signaling channel) but the process of compressed a traffic channel included in several PBX brands can modify the bandwidth of the traffic channel versus quality of the calling party.
-An introduction of extension technology used into PBX systems : analog, digital and IP handset phones; Analog extension can be swaped with telephone handset used into analog trunk conecctions, the bandwidth used is 64Kbps and it is possible set up a parallel conecctions to this terminal; related to digital extensions, these are closed linked to the brand of the PBX and signaling between them (PBX and extension) belong to propietary coding, anyway the additionally functions added to this type of terminal are placed to directors, Chiefs and supervisors into company, in this case is not possible to make parallel connections to this extension; about Ip extensions takes various concepts from digital extensions : Propietary addtional coding Protocols and suggest the importance of the structured cabling systems as main piece into implementation of this type of project, into PBX is inserted an Ethernet/Ip card to connect from PBX to structured cabling, the concept of mobility of the Ip extensions is introduced with this type of technology that should be balanced with others parameters such as QoS, domains of colissions, VLANs, degree of service, ratio compressed of traffic channel should be additional parameters to find the best performance with this type of communications established.
- The importance of calling management software in order to establish the scale of cost calling for every office and every trunk available installed into PBX , taking the way to clear what type of calling services are most used compared with others and fortify the weak devices connected or detect the failured devices that are not working properly with the capacity begun installed.
