OXO Connect Hospitality limits

[bcmir]

Hi All, can anyone clarify the OXO Connect Hospitality limits pasted below (as taken from TC2252.Ed.04 20th Sept 2017)
I have a hotel with 135 room phones, can I get away with an OXO instead of OXE.. Can I check-in/check-out 300 'guest phones' or is it only 120 (room supervisions) ??

3.6 Hospitality Hotel (Guest)
Number of guest phones
300
Front desk hotel management application on NOE phone
4
Room supervisions with front desk hotel management application on NOE phone
120
DDI numbers for dynamic allocation to guest phones
300
Office Hotel Link session (external Hotel application)
1
Room supervisions with external application over OHL
300