[Asterisk-Users] channel banks

[Peter Svensson]

On Thu, 9 Dec 2004, Andrew Kohlsmith wrote:

> On December 9, 2004 10:38 am, Dan Goscomb wrote:
> > we are about to deploy an asterisk server. on the external side we will
> > have an ISDN30e plugged in to a E100P card. On the internal side i wish
> > to use a channel bank. Which products work best for this solution? Can
> > another E100P be used? and if so... what channel banks are compatible?
> > where can they be purchased? and whats the approximate cost?
> 
> I don't know of any E1 channel banks but a T1 channel bank will work *just 
> fine* for your application (with the exception that it's only 24 channels) -- 
> You can use a T100P and T1 channel bank in the UK; I believe the ringing 
> voltage and current loops are all identical anyway.  The ringer cadence may 
> be north-americanized though.

US and European phone systems use a different impedance on the lines. I am 
not familiar with the channel banks to know which can be programmed for 
the correct impedance for UK.

> T100P is US$500 new from Digium, T1 channel banks are about USD$250-$400 used 
> depending on how many channels and so on.

Also, UK uses 230V, not 110V. There may be a problem importing a channel 
bank if it does not have a universal power supply.

Peter