It sounds like a lot but you have to keep in mind that each person answering the phone is sitting in front of a pc. Say there are sixty people just working the phones...call centers are an office just like any other. The hardware adds up pretty quick.
Today's pc's are cheaper then ever. It is not difficult to get a pc for less then $500 these days. These workers don't need the latest and greatest to read database entries off a webpage, ever a 200MHz box would work fine for that (ie: used equipment).
Allowing for NEW equipment would only increase the FIXED costs about $30,000... allowing for desks (no fancy cubes here.. $200 ea), an additional $12,000. Even the automated servers are not very expensive. Figure an additional 30 machines (callers determine which sound file they hear).. increases the fixed cost about $15,000. These costs run about $57,000 total. Allowing for unseens... increase that to $100,000. Then add office space in some warehouse district for less then $8/sq ft and go for about 2,000 sq ft, and you'd have about $1,333/month rent. These are all costs based on US numbers, not Mexican or Indian.