We have a Cisco 2921 router at the head office (Easy VPN Server) and been deploying Cisco 887VA (EasyVPN remote - Network Extension) for remote offices using EasyVPN. We are allowing Voice and Data traffic over VPN. Everything has been working great until this issue was discovered today:
When a remote user behind Cisco 887VA calls another remote user also behind Cisco 887VA, the call connects and Avaya IP phone rings but no voice in either direction.
Calls to/from head office and external mobiles/landlines are fine. Only calls between two remote sites are affected.
As there is no need for DATA connection between Remote office, our only concern is Voice support.
By the looks of it, I think "hair-pinning" of traffic over VPN interface is needed. But need some advice on configuration. (Examples configs etc).
Thanks in advance.
