DPNSS Signaling

Adam,

 

DPNSS is a protocol normally only used by PBXs in the UK and by saying T1 then I assume one end is in the US.  Anyway you could use the EGWs but they’;d be expensive and they’;ve gone end of life http://www.cisco.com/en/US/products/ps5938/prod_eol_notice0900aecd80403827.html

 

Soo:p>

1. you could stick a QSIG card in the Mitel with a Cisco 28XX with the right vwic, PVDM, IOS etc in MGCP mode on the other end and you’re done
1. http://www.cisco.com/univercd/cc/td/doc/product/voice/c_callmg/4_1/pbx_int/397380mi.pdf <-- old but useful
2. if you still need to use DPNSS and don’t want to fiddle with the Mitel too much then stick a Westell IQ2000+ box Cisco 28XX with the right vwic, PVDM, IOS etc in MGCP mode on the other end of the link and you’re done.
1. http://newsroom.cisco.com/dlls/partners/success_stories/total_network_solutions_hospital_073003.pdf <-- It’s been done before by these guys.
3. If you can’t do (2) cause you can’t get the Westell in the US then you could instead use the Westell IQ2030 attached locally to the Mitel, but connect to the Westell as a H.323 Gateway over the T1.

 

Here’;s a link explaining the DPNSS features that can be passed between CallManager and a Westell http://www.westell.co.uk/support/downloads/DPNSSfeaturesexplainedv41.pdf but I recommend that you contact Westell or your local Cisco office/partner 1^st.

 

Lastly a Westell costs £1000+ and if you go for one I’d recommend that you have a Mitel engineer one end and a Westell Engineer the other so they can argue who’s equipment it is that doesn’t work J

 

Rgds,

 

Paul.