PlusNet and SMS

[#1]

Just got my PN phone line today and am looking at differences from BT.
My answer machine does in and out SMS. So when someone leaves me a message the answer machine sends SMS to mobile (or used to). BT gave me 200 free outgoing texts per months in my normal broadband package. From what I can see PN don't support outgoing SMS. I have had a look around but cannot see any way to get a service that would provide this.
Anyone on PN had any experience with this?
Ta, Andy.

[#2]

AFAIK Plusnet does support SMS but this requires the caller display 'call feature' in order to work.  Charges are 10p per message:
https://portal.plus.net/home-broadband/tariffs/
near the bottom of  'Fixed Fee call rates', with the description 'Text Message'

[#3]

Thanks for the reply.
I was talking to PN Customer Service just now about this and they said they did not have a facility to send SMS from the land line. Having seen your reply I might ask them what the fixed charge means as it does imply that I can send SMS. I have not see any mention of an SMSC rumber for PN, I know I used to use 08005875290 for the incoming SMS on BT but have since lost the outgoing number.
Thanks, Andy.

[#4]

As I understand it, the SMS service is provided as standard by BTWholesale. You might find this useful https://www.btwholesale.com/shared/document/Support/FAQ/Voice/Wholesale-FLT-FAQs-v2.pdf

[#5]

My home phone supports error message texting.
I performed one test text which activated my BT texting service and cost 10p.

[#6]

@MisterW
Thanks for the link. These were the numbers I had in my answer machine originally but since occidentally doing a master reset (whilst cleaning it!) I had lost them. Thanks for that.
It is now all working as before. I just assumed that after quitting BT I would not be able to use the service. Hmmm, shame about the 10p cost as I used to get 200 texts free with BT.
Thanks for the replies, Andy.