I installed a Yealink W52P on a NEC SV9100, works great, the customer decided they wanted a 2nd cordless handset and purchased one. The new handset registered as H2, the original handset is H1. The new handset receives internal and external calls but cannot not dial out.

Something I noticed: When I press the speaker key on the original handset H1 line 1 comes up, when I press the speaker key on the new handset line 6 comes up.

The base was setup as extension 191, when I call 191 both handsets ring, when a inbound call comes in both phones ring.

My question is what have I missed that won't allow outbound calls on the 2nd handset?

We get old too soon, smart too late