On Wed, Apr 7, 2010 at 1:16 AM, Ratko Dodevski <rade239 at gmail.com> wrote: > But can I use 1941 as a branch router for VoIP? The idea is to use > 1941 with one PRI to connect some PBX witch will use SIP to the > operator. > > can I do that? No. To terminate the PRI you need DSP resources. The lowest ISR G2 is a 2901 to support voice.