I’m putting together a PBX using a TE420P card configured for E1s that is connected to an Errickson MTS. successfully compiled and installed libpri 1.4.11.3, DAHDI 2.3.0.1+2.3.0 and Asterisk 1.6.2.9. everythings seems to be working. SIP phone to SIP phone (POLYCOM) calls work fine however, network calls do not. When I went to debug PRI, the only command that showed up when I did “>CLI core show help pri” was ‘pri intense debug span’ which seemed strange to begin with and when I did “>CLI pri intense debug span 1”, I got something strange like “‘pri set debug 2 span 1’ is not a valid command”. Tried reinstalling everything but keep getting the same result. Also, when I try to make call from SIP phone to a wireless phone on our GSM network, I get something like “Call to extension ######## rejected because the extension is not found in context POLYCOM#” but it is definitely in the extensions.conf with a line “exten => 1,1,Dial(dahdi/g1/#########xxx)”. 
Please help…
Thanks,
~Mike