Before Starting
Initial procurement and setup costs
High costs
Low costs
During Execution
Issues arising from dust and wind at the construction site
Reinstallation costs
After the project reaches a milestone and the temporary construction office is dismantled, it must be moved into the office space within the newly completed building. Consequently, a second telephone system installation fee is incurred.
Need frequent equipment checks
Yes
No
No
After Completion
Removal and retention of PBX equipment
Handling of phone numbers afterward
Requires staff to dismantle and evaluate whether to keep or sell
Once equipment is removed, the original contact number for the project site cannot be retained for future communication
Just cancel the subscription, no need to worry about equipment removal or retention
During the subscription period, the number can continue to be used without any service interruption
Before a project starts
Point：Initial procurement and setup costs
High costs
Low costs
During Project Execution
Point：Issues arising from dust and wind at the construction site
Need frequent equipment checks
No
Point：Reinstallation costs
（After the project's phase completion, the temporary site office needs to be dismantled and relocated to the completed building's office, resulting in secondary telephone system setup costs.）
Yes
No
After Project Completion
Point：Removal and retention of PBX equipment
Requires staff to dismantle and evaluate whether to keep or sell
Just cancel the subscription, no need to worry about equipment removal or retention
Point：Handling of phone numbers afterward
Once equipment is removed, the original contact number for the project site cannot be retained for future communication
During the subscription period, the number can continue to be used without any service interruption
