| Business | Phone |
| A Personal Answering Svc 1005 N Point Blvd # 709, Baltimore 21224 | (410) 284-9100 |
| A Personal Answering Svc 1103 N Point Blvd, Baltimore 21224 | (410) 284-9100 |
| Aaa Business Svc 2612 Maryland Ave, Baltimore 21218 | (410) 366-2902 |
| Moore Security Inc Baltimore 21236 | (410) 665-2566 |
| Chesapeake Tele Svc Inc 10 Light St, Baltimore 21202 | (410) 539-6400 |
| Discount Voice Mail Baltimore 21202 | (410) 625-9225 |
| Emerging Technologies Ctr 2400 Boston St # 300, Baltimore 21224 | (410) 327-9150 |
| J C Smith Telephony Svc 937 North Hill Rd, Baltimore 21218 | (410) 243-7632 |
| Right Connection Baltimore 21220 | (410) 574-6646 |
| Kwik Connect 500 W Lexington St, Baltimore 21201 | (410) 986-0104 |
| Signius 8100 Stansbury Rd, Baltimore 21222 | (410) 631-4545 |
| Signius Communications 8100 Stansbury Rd # 100, Baltimore 21222 | (410) 631-1600 |
| Map Communications Inc 400 E Pratt St # 800, Baltimore 21202 | (410) 576-8767 |
| Call Forwarding Message Ents Baltimore 21204 | (410) 321-7166 |
| Tasco Telemessaging Ctr 6600 York Rd # 203, Baltimore 21212 | (410) 377-3000 |
| Tasco Teleservices 6600 York Rd, Baltimore 21212 | (410) 879-7778 |
| Tel-Star Telephone Answering Baltimore 21201 | (410) 539-7727 |
| Colonial Answering Svc 3903 Liberty Heights Ave, Baltimore 21207 | (410) 542-7930 |