Lal, Deepak (Contractor) wrote:
I'm confused a bit about the following and was hoping to get some answers on this group - What is exactly implied when we say asterisk can connect to a PSTN. Does it mean connecting to the PSTN via PRI/T1/E1?
Basically. There are also POTS interfaces that work with asterisk.
If yes, then I assume
asterisk does not need to do any SS7 signaling and all it does (playing the role
of a PBX) is to connect to a Class 5 Switch at the CO. Is this a correct
statement?
It _is_ the "Linux Open Source PBX" after all :)
As I understand, Asterisk does not support SS7 signaling. So does this imply
that asterisk cannot be really used in a CO as a Softswitch which would
interface with the PSTN via SS7 signaling?
AFIAK, Asterisk does not speak SS7. However, SS7 is not the only requirement in a softswitch application. Another critical feature would be supporting GR-303 interfaces.
If that is the case, the only softswitch functionality that Asterisk provides is the media conversion between TDM circuit and an IP network (using SIP)? Is this correct?
Pretty much. It's not a softswitch, it's a PBX :) I can't say for sure, but I doubt the developers are aiming toward providing all of the features requred for a softswitch.
Jerimiah Tularosa Communications
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