| Number | Name | Date | Kind |
|---|---|---|---|
| 5008930 | Gawrys et al. | Apr 1991 | A |
| 5128981 | Tsukamoto et al. | Jul 1992 | A |
| 5140611 | Jones et al. | Aug 1992 | A |
| 5268903 | Jones et al. | Dec 1993 | A |
| 5327144 | Stilp et al. | Jul 1994 | A |
| 5335269 | Steinlicht | Aug 1994 | A |
| 5365581 | Baker et al. | Nov 1994 | A |
| 5396540 | Gooch | Mar 1995 | A |
| 5400327 | Dezonno | Mar 1995 | A |
| 5465286 | Clare et al. | Nov 1995 | A |
| 5479482 | Grimes | Dec 1995 | A |
| 5548637 | Heller et al. | Aug 1996 | A |
| 5793861 | Haigh | Aug 1998 | A |
| 5841854 | Schumacher et al. | Nov 1998 | A |
| 5914668 | Chavez et al. | Jun 1999 | A |
| 5918181 | Foster et al. | Jun 1999 | A |
| 5974328 | Lee et al. | Oct 1999 | A |
| 6009333 | Chaco | Dec 1999 | A |
| 6061561 | Alanara et al. | May 2000 | A |
| 6236365 | LeBlanc et al. | May 2001 | B1 |
| 6272347 | Griffith et al. | Aug 2001 | B1 |
| 6449356 | Dezonno | Sep 2002 | B1 |
| Entry |
|---|
| Derville, D. and Mussig, B., “Call Centers: A Strategic Issue for both Customers and Suppliers,” Alcatel Telecommunications Review 275-83 (4th Quarter 1996). |