I will be getting a cable package soon that will include VOIP and Internet. Since I do not have this right now, I will assume that the cable modem that I will receive will have a RJ45 port for internet/natting and a RJ11 port for voice. I’m guessing that the modem converts the digital line to analog to work with traditional POTS phones.
If I am correct - my question is;
Is it possible to not use the RJ11 port at all, and have a VOIP phone such as a cisco or shortel phone direclty plugged into my LAN and still recieve phone calls from the number provided by my ISP?
I assume it would go ISP —> Cable Modem --> LAN --> Asterisk --> Voip enabled phone.
Am I way off here? I have read some documentation but I can’t see any specific lit on users who already have VOIP service from their ISP and if it’s doable…
No you can not, U are ASSUMING the cable company would allow it, and give the info needed to configure the phone, for course they will do not such thing.
Here in Portugal the most important cable provider is offering VoIP but only with their equipment (a router with FXS ports). I asked if I could use a PBX like Asterisk and the answer was no.
The cable modem/router has a RJ11 port (analog) where you can connect your old phone. If the cable company uses SIP theoretically you can connect anything that uses SIP (a SIP hardphone or softphone) or an Asterisk server. The problem is that the cable company has some hidden configuration that prevents that…
Well, my goal is to have IP phones (RJ45) in my house working with asterisk and be able to dial out and receive calls…
-Can I get a supura 3000, and use IP phones in my house?
-Can I use a supura 3000 if I my service provider is a cable provider? Does this modem convert it to analog?
I see that the supura has an RJ11 jack, but It has a RJ45 to go to a PBX too. So, is it possible to not even use the RJ11 jack and setup asterisk to use an IP phone on my LAN?
-If so, would I be able to dial out and receive calls?
The Sipura 3000 is an adapter with 1 FXO port and 1 FXS port. The FXO connects to the PSTN and the FXS connects to an analog telephone or a fax machine. So you can use your old telephone and use both VoIP and the PSTN.
As I said in a previous post, what might happen is that you can’t use the Sipura 3000 with the VoIP service provided by your cable company because of a commercial strategy… but you can use it with something like Vonage or a similar VoIP provider.
It appears that I am more confused than I originally thought…
The Sipura 3000 is an adapter with 1 FXO port and 1 FXS port. The FXO connects to the PSTN and the FXS connects to an analog telephone or a fax machine. So you can use your old telephone and use both VoIP and the PSTN.
Ok, what device will allow me to use IP phones?
As I said in a previous post, what might happen is that you can’t use the Sipura 3000 with the VoIP service provided by your cable company because of a commercial strategy…
Sorry. How would one utilize Asterisk if they have VOIP from their ISP? Is companies like Vonage the only option?
The Sipura as a VoIP adapter has a RJ45 port for the LAN. Through that port you connect it to your LAN and access the Sipura using a IP hardphone or a softphone installed on your PC. The Sipura also connects to a VoIP provider through your broadband (cable) internet access.
PSTN — 3000 — Router/Switch — PC
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Fax Internet
The cable company that I told you offers unlimited calls to local and nacional fixed numbers for a very low fee. They only do this to the residential market. That’s why they don’t want a company with a PBX connecting to their VoIP service. For the business market they have diferent prices and packages.
The Sipura as a VoIP adapter has a RJ45 port for the LAN. Through that port you connect it to your LAN and access the Sipura using a IP hardphone or a softphone installed on your PC. The Sipura also connects to a VoIP provider through your broadband (cable) internet access.
Great! Clarification. Thanks for the info.
the cable company that I told you offers unlimited calls to local and nacional fixed numbers for a very low fee. They only do this to the residential market. That’s why they don’t want a company with a PBX connecting to their VoIP service. For the business market they have diferent prices and packages.
The reason why I am going with the VOIP service with my ISP is that it is included in a package (tv/internet/phone), and would not want to pay another 20-30 for the same type of service… Do you or anyone else know if anyone has utilized Asterisk with a “locked” voip cable modem? My ISP is optonline.net btw
Well, you might unlock that access and then use an Asterisk PBX but then your cable company might charge you with some extra payments/fees. If the contract you sign with them is only for residencial use and then they discover that you are using it in a business, they can have a case.
I have a VoIP account on a provider that had a configuration that prevented that Asterisk servers could connect if they were configured with the default agent in sip.conf. They gave me an example of a sip.conf file and I could then use my Asterisk PBX, but this provider works for both markets.
Remember one thing: if a company is giving unlimited calls for 9 euros they must have an application that monitorises all customers to prevent fraude…
Very interesting. This shows how much of an impact this project has on big business.
Well, I just installed AnsteriskNOW, and will continue to read up on this stuff. If it turns out that I can’'t use my soon-to-be VOIP service, I may just go another route…
santosam - you’ve been a great help and clarified some of my questions…
It’s nice to have a feedback like yours.