We have HiPath3800 with HG1500, i successfully connected HG1500 with Asterisk using IP Trunking.
Following things are working.
SIP Phone – Asterisk-- SIP Native–HG1500–Extension (Working)
Extension–HG1500–SIP Native–Asterisk–SIP Phone (Working)
how to use HIPath 3800 PRI Line for outgoing call from Asterisk.
SIP Phone – Asterisk–SIP Native–HG1500–(PRI External phone).
HG1500 Version 6
Asterisk Version 1.4.22
Thanks & Best Regards