MyResume
Life is short. Eat dessert first !
Detailed Explanations for
Network technician:
There were 2 companies working together: one in Iasi, Romania, one in Modena, Italy, with one more site, in Verona, Italy. Because of huge costs of international calling and the need to exchange a lot of information very quickly, decision was made to implement Internet Telephony. Planet tm VoIP Internet Telephony Gateways were chosen. www.planet.com.twTasks
(Establishing communication between 3 sites: Iasi, Modena and Verona using VoIP) At the beginning there were 2 ITGs, one in Iasi, one in Modena. Every gateway had 3 tables, related: o Phone Number -> Hunting Group (which is a group of destinations) o Hunting Group -> Destinations o Destinations -> Physical Ports or IP addresses. Hardware configuration: 2 kinds of telephony ports: o 2 generators (for phones) -> FXS o 2 consumers (for external phone lines) – FXO o one network interface. Using specific commands, I configured phone ports and phone line ports and IP addresses, to make possible communication from 2 phones in Romania to 2 phones in Italy, through Internet and access to PSTN of both countries. I used prefixes for remote numbers, since gateways transmit, over Internet, telephony signaling. And they forward this signaling on telephony ports too. Configuring internal routing for 3 gateways in Iasi o Another 2 gateways arrived in Romania. It was necessary to configure internal routing on all 3 gateways. Each gateway had to know to direct the internal calls, from one phone to another and towards PSTN. Configuring external routing between 2 sites: Iasi and Modena. Using prefixes o From each gateway to make calls possible through internet, between sites, the external routing. o For Italy, I configured the prefix “9” and for Romania, the prefix “5”. The numbers were transmitted through Internet, from a country to another (signaling) and the prefixes were stripped at destinations(s). After stripping, the numbers were checked again against local tables with numbers, groups and destinations. One more gateway arrived in Italy, so I configured that one too, and I configured the internal routing there. Remotely it was possible to do that using telnet. They configured only the public IP address needed. Configuring one more site: Verona o Also, one more gateway was mounted in Verona, Italy. I used prefix “7” for this location and I had to update all tables, on all gateways, with that prefix. o Configuring the PABX and connecting it to VoIP gateways in Iasi Configuring the PABX and connecting it to VoIP gateways in Modena o From Italy they sent us a little PABX with the phones too. ISDN phones. ISDN with 4 wires. PABX was a box with a thick cable going to a patch panel. On that patch panel were all the connectors for ISDN phones (4) and analog phones (12 FXS ports) and 4 external lines for PSTN (4 FXO ports). o I connected a VoIP gateway to the PABX, using the patch panel. 2 external lines went from PABX to a VoIP gateway. In order to access VoIP telephony from ISDN phones, on PABX, users had to select external lines 3 or 4, using special buttons (each ISDN phone had 4 buttons which allowed to select one of the 4 external lines of the PABX). To access the PABX from the VoIP gateway, (the reverse direction) I connected the gateway to PABX, as if it were 2 analog phones (using 2 FXS ports), on the first 2 external lines of the PABX, of the 4 analog external lines possible. o Two of the external lines of the PABX were accessible dialing a “0” from the phones connected on PABX. They installed a PABX in Italy and I configured the gateways from there, remotely, too. Configuring a speed dial for the manager’s phone o The VoIP gateways had the possibility not only to strip digits from the number dialed, but to add, also. o I setup a speed dial for the manager’s cell phone, in Romania. Who, from Italy, wanted to call him, dialed prefix “5” and a 3-digit number. The calls went from Italy, through VoIP, to Romania, where digits were added: “0” in the front of the speed dial number, so the PABX would select an external line to PSTN and 5 digits at the back of the number, to make it complete. A VoIP gateway dialed it.
Internal Routing
Configuring internal routing for 3 gateways in Iasi
External Routing
Configuring external routing between 3 sites: Iasi, Modena and Verona. Using prefixes 5,9,7.
Custom Speed Dial
I setup a speed dial for the manager’s cell phone, in Romania. Dial a 3 digit number to dial automatically the whole 10 digit number needed.
MyResume
Life is short. Eat dessert first !
Detailed Explanations for
Network technician:
There were 2 companies working together: one in Iasi, Romania, one in Modena, Italy, with one more site, in Verona, Italy. Because of huge costs of international calling and the need to exchange a lot of information very quickly, decision was made to implement Internet Telephony. Planet tm VoIP Internet Telephony Gateways were chosen. www.planet.com.twTasks
(Establishing communication between 3 sites: Iasi, Modena and Verona using VoIP) At the beginning there were 2 ITGs, one in Iasi, one in Modena. Every gateway had 3 tables, related: o Phone Number -> Hunting Group (which is a group of destinations) o Hunting Group -> Destinations o Destinations -> Physical Ports or IP addresses. Hardware configuration: 2 kinds of telephony ports: o 2 generators (for phones) -> FXS o 2 consumers (for external phone lines) – FXO o one network interface. Using specific commands, I configured phone ports and phone line ports and IP addresses, to make possible communication from 2 phones in Romania to 2 phones in Italy, through Internet and access to PSTN of both countries. I used prefixes for remote numbers, since gateways transmit, over Internet, telephony signaling. And they forward this signaling on telephony ports too. Configuring internal routing for 3 gateways in Iasi o Another 2 gateways arrived in Romania. It was necessary to configure internal routing on all 3 gateways. Each gateway had to know to direct the internal calls, from one phone to another and towards PSTN. Configuring external routing between 2 sites: Iasi and Modena. Using prefixes o From each gateway to make calls possible through internet, between sites, the external routing. o For Italy, I configured the prefix “9” and for Romania, the prefix “5”. The numbers were transmitted through Internet, from a country to another (signaling) and the prefixes were stripped at destinations(s). After stripping, the numbers were checked again against local tables with numbers, groups and destinations. One more gateway arrived in Italy, so I configured that one too, and I configured the internal routing there. Remotely it was possible to do that using telnet. They configured only the public IP address needed. Configuring one more site: Verona o Also, one more gateway was mounted in Verona, Italy. I used prefix “7” for this location and I had to update all tables, on all gateways, with that prefix. o Configuring the PABX and connecting it to VoIP gateways in Iasi Configuring the PABX and connecting it to VoIP gateways in Modena o From Italy they sent us a little PABX with the phones too. ISDN phones. ISDN with 4 wires. PABX was a box with a thick cable going to a patch panel. On that patch panel were all the connectors for ISDN phones (4) and analog phones (12 FXS ports) and 4 external lines for PSTN (4 FXO ports). o I connected a VoIP gateway to the PABX, using the patch panel. 2 external lines went from PABX to a VoIP gateway. In order to access VoIP telephony from ISDN phones, on PABX, users had to select external lines 3 or 4, using special buttons (each ISDN phone had 4 buttons which allowed to select one of the 4 external lines of the PABX). To access the PABX from the VoIP gateway, (the reverse direction) I connected the gateway to PABX, as if it were 2 analog phones (using 2 FXS ports), on the first 2 external lines of the PABX, of the 4 analog external lines possible. o Two of the external lines of the PABX were accessible dialing a “0” from the phones connected on PABX. They installed a PABX in Italy and I configured the gateways from there, remotely, too. Configuring a speed dial for the manager’s phone o The VoIP gateways had the possibility not only to strip digits from the number dialed, but to add, also. o I setup a speed dial for the manager’s cell phone, in Romania. Who, from Italy, wanted to call him, dialed prefix “5” and a 3-digit number. The calls went from Italy, through VoIP, to Romania, where digits were added: “0” in the front of the speed dial number, so the PABX would select an external line to PSTN and 5 digits at the back of the number, to make it complete. A VoIP gateway dialed it.