[asterisk-users] moving from asterisk1.2 to asterisk1.4

[Victor Pascual]

Hello all,
I'm moving from Asterisk 1.2 to Asterisk 1.4.0-beta3. I'm just
configuring an extension associated to an external sip-based voip
service provider in order to be able to initiate/rcv pstn calls.
Is there any relevant issue when moving from v1.2 to v1.4? Maybe
something related to sip.conf/type variable? 
I'm only configuring sip.conf and extensions.conf config files.

Thanks you very much,
Victor