The central defender, recruited from Coventry City ahead of the transfer deadline, joined the Hammers following his return from England under-21 international duty and has since featured in four games for the Upton Park outfit.
Frank Arnesen explained the thinking behind Calum's signing and subsequent loan move, saying he felt it was important the player enjoyed first team football immediately while relocating to the London area.
Calum admits the nature of the transfer is slightly unusual but is confident the arrangement will work out to his benefit.
"Obviously I haven't come to Tottenham straight away and have gone to West Ham, so it is a bit unusual," said the Bedford-born player. "In the long term hopefully it will work out best for me.
"With the size of the squad there are quality players ahead of me at the moment so my chances would be limited and I would probably be stuck in the reserves. To move down and go to West Ham, which is another big club, get my family down and get settled, then hopefully the time will come soon when I get involved with things here at Tottenham.
"The two training grounds are not far apart so, like here, I can pop and and train now and again on days off and I can still train with West Ham."
While it was naturally a bit of wrench to leave his first club, Calum feels the time was right to progress his career away from Highfield Road in order to realise his ambitions.
"You want to play at the highest level, test yourself and do what you can with your career. I was there five and a half years and I felt the time was right to move on, I just had nine months left on my contract and Coventry needed the money so it worked out well for everyone in the end.
"I'm from Bedford and my family is there so they can easily get down and see me. It's worked out well for me."
The 21-year-old added that the young players currently thriving at Spurs months influenced his decision to join up.
"There is a lot of British lads here and they are all young as well. Hopefully I can be a part of that sooner or later, but I have got a job to do at West Ham too. If I can help them back up it will be a good season.
"I know Jermain and Johnnie Jackson was on loan at Coventry last year so coming here has been easy and everyone has been friendly."
Calum said farewell to Coventry following a 2-1 victory over West Ham and he recalled that one Teddy Sheringham was first over to wish him well on his switch to the Lane.
"My last game for Coventry was against West Ham and after the game he shook my hand and said I will enjoy it at Tottenham - not knowing I was going to West Ham first!"
Calum Davenport popped into Spurs Lodge last week for a spot of training on his day off from his temporary stint at West Ham.