the simplest way to populate the expansion module is by populating your buddy list and for each buddy select 'watch buddy'. If you prefer to edit the mac-addr-directory.xml manually, there is a 000000000000-directory~.xml example. You could also do a couple via the phone and then finish the directory file with an editor. Any line-key not assigned as an extension will become speed dial keys for those persons. The BLF occurs as a result of subscription aka 'watch buddy'. You must set a call-limit in each extension even if its arbitrarily high (can someone really talk to 10 people at one time on a handset that will only bridge 4 lines togeather?).

thirdlane already uses sip subscriptions

[general]
allowsubscribe=yes
notifyhold=yes
notifyringing=yes
limitonpeer=yes

and in the specific sip registration:
call-limit=10
subscribecontext=local-extensions

I generally assign the 6 linekeys on the phone as the extension, then leave the expansion modules as the BLF buddies.

from my models.txt

[polycom-601/650]
label=Polycom 601/650
lines=6
phone_template=polycom_phone.cfg
line_template=polycom_line.cfg
output=${mac}-registration.cfg
input_1=polycom_mac.cfg
output_1=${mac}.cfg
input_2=polycom_local.cfg
output_2=local-settings.cfg
required_1=sip.cfg
required_2=phone1.cfg

Erik Smith
CTO
BluegrassNet Voice
dCAP

Where is this buddy list? Is it in the PBX manager?

Just add a contact and turn on 'watch buddy'

-Matt

dont forget to enable budy watching in your configurations..

feature.1.name="presence"
feature.1.enabled="1"
presence pres.reg="1"

Erik Smith
CTO
BluegrassNet Voice
dCAP

Do you mean 'Create Contact' in Directory under 'Extensions & Directory' in the Admin portal? I'm not finding anything about Buddies.

Could anyone provide a step-by-step example on how to set it up, what menus, etc, and what I would have to do on the device itself?

Does PBX manager have to auto-provision the Polycom expansion module through a/the config server in those configurations shown above? Maybe I also need an overview of the auto-provision process as well, not using it now.

http://www.polycom.com/common/documents/support/user/products/voice/soun...

You should skim this manual and read what is of interest...it has step by step instructions.

So looks like it is all on the phone and no config required in PBX manager. Is that accurate?

Only thing in PBX manager is what Eric mentioned above:

"You must set a call-limit in each extension even if its arbitrarily high (can someone really talk to 10 people at one time on a handset that will only bridge 4 lines together?)."

-Matt

Thanks for the outside info!