Hello KCP88,
welcome to the Polycom Community.
It is always useful to include the currently used SIP or UC Software version as issues experienced may already be addressed in a newer release.
This also allows yourself and others to check against current software release notes.
The above is also stated in the "Read First: Welcome to the Polycom VoIP Forum"
Therefore the Polycom VoIP FAQ contains this post here:
Question: How can I find out my SIP UC Software Version or the BootROM Version of my Phone?
Resolution: Please check here
Simply looking at your log:
000203.825|ldap |4|00|ldapData::ldapConnBind:ldap_x_bind_s - rc=0x31 <Invalid credentials>
or
0218181237|ldap |3|00|cDynamicData::processError:login error
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services