tandem trunking shoretel to nortel

Wondering if anyone has run into this senario
shoretel calling out through bcm
Pri ni2 w/t-1 x-over connecting shoretel w/bcm
bcm has remote access pkg w/access to outbound t-1 that is winkstart
calls are showing they go to the pstn with the trunk test tool on both switches but on the shoretel side seems to time out and return dialtone some calls will connect others will ring once on other end
a timer i may be missing?