telna Mobile [split thread]

[VladS]

Originally Posted by telnamobile

To save you from decompiling the cards, I can tell you that the SIMs are coming from an Israeli mobile operators. This being said, that does not mean it will encounter the troubles of other cards from Israel as the technical setup is completely different. 100% of voice calls transit over our own network.

Do you run your own MVNO registrar or do you piggyback on your provider's HLR? Running your own registrar would allow the call path to entirely bypass the Israeli operator's infrastructure thus reducing latency.

Originally Posted by telnamobile

We could imagine this SIP option indeed where you would send the calls to yourtelnamobilenumber@sometelnaserver . Would you need a proxy to register into, and/or are you sending from a fixed IP address?

To be compatible with the SIP world out there you must allow anonymous/unauthenticated calls to the client's SIP URI.

Originally Posted by telnamobile

However we offer free voicemail online, which means that if you travel in one of the expensive countries with our service and you have access to the internet, you can check your voicemails from our website.

Can you also send voicemails to a specified email address?

[telnamobile]

Originally Posted by VladS

Do you run your own MVNO registrar or do you piggyback on your provider's HLR? Running your own registrar would allow the call path to entirely bypass the Israeli operator's infrastructure thus reducing latency.

We piggyback the calls to our provider's HLR.

Originally Posted by VladS

To be compatible with the SIP world out there you must allow anonymous/unauthenticated calls to the client's SIP URI.

We will then work on making this option available. As long as you send yourtelnamobilenumber@sometelnaserver to one of our IPs we should be able to add this feature.

Originally Posted by VladS

Can you also send voicemails to a specified email address?

For the voicemails we already have the option of a notification of new voicemail or notification of voicemail with the voicemail attached (wav file).

[VladS]

Originally Posted by telnamobile

We will then work on making this option available. As long as you send yourtelnamobilenumber@sometelnaserver to one of our IPs we should be able to add this feature.

The call would come as a SIP INVITE from any source/URI to yourtelnamobilenumber@sometelnaserver.

Originally Posted by telnamobile

For the voicemails we already have the option of a notification of new voicemail or notification of voicemail with the voicemail attached (wav file).

Voicemails would be best compressed with either .gsm (limited number of players) or low grade single channel mp3 (to make it compatible with most email enabled phones out there). I for one use 16kbps/mono cbr mp3 to encode voicemails before emailing them to their destination.

[telnamobile]

Originally Posted by VladS

Voicemails would be best compressed with either .gsm (limited number of players) or low grade single channel mp3 (to make it compatible with most email enabled phones out there). I for one use 16kbps/mono cbr mp3 to encode voicemails before emailing them to their destination.

gsm files shouldn't be a problem. I added this to the roadmap of future additions. MP3 I don't think we'll add it because it requires licensing of the codec.

[DRNewcomb]

Originally Posted by VladS

Do you run your own MVNO registrar or do you piggyback on your provider's HLR? Running your own registrar would allow the call path to entirely bypass the Israeli operator's infrastructure thus reducing latency.

Latency is a key issue in these international callback systems. I recommended Celtrek service to a friend as being cheaper than using a Japanese prepaid in Japan. It was. It worked just fine. His wife refused to talk on the phone because she could not get used to the latency. When talking to her relatives in Japan, while in Japan, the call had to go around the world and back again. This introduced such a delay she couldn't accomodate to it. (Most people don't have a half-duplex mode.) Had they been roaming normally, the delay wouldn't have been an issue.