Unneccessary complication
Posted on April 3rd, 2007 by erik
I’m working on getting an asterisk phone pbx set up in our Budapest, Hungary office. I needed to test things tonight, so I place a few test calls. Here’s the call flow in a nutshell:
- SIP softphone on my laptop
- VPN to Logic HQ
- VPN to Budapest office
- IP to Budapest asterisk server
- ISDN line to telco in Budapest
- PSTN from there to T-Mobile, probably going through someone’s under-sea fiber optic trunk
- T-Mobile back to my cell sitting right next to my laptop
And it worked - caller ID and everything :-)
Okay - I admit - that’s quite geeky, but hey, I had to provide some exposure to the near Rube Goldberg machine required to make this call work :-)
Wow, that’s very cool. What was the latency for call setup and during the call?
On a side note, I was in Budapest exactly 384 days ago.. Unfortunately, it was on the tarmac and we never got out of the plane.
Call setup? Really not any different than a normal international call - possibly a bit better even. I can hit “dial” on my softphone and my cell will right about 5 seconds later.
As far as in-call latency goes, likewise, it’s about the same as a normal international call. Somwhere between 350-450 ms.