Head Office has a 2811 CCME, connected to an 877 for broadband connectivity
Remote site 1 has a 877 VPN'ed into head office
Remote site 2 has a 877 VPN'ed into head office
the remote sites can phone (via a 7921 and 7906 respectivley) head office over the VPN with no problems, via the internal ext numbers.
Head office can call them back no problems on their internal ext numbers.
The remote sites however cannot speak to each other - but they cann ring each other - just the voice traffic doesnt get set up.
If they dial each others DDI number they can then successfully talk to each other.
Where am I going wrong?