User guide

16 CHAPTER 1. INTRODUCTION
Phone
Network
(POTS)
Paging
Network
Fax
Network
Modem
Network
IS 136
NBPCS
CDPD
Internet
Network
Access
Pager
Gateway
Fax
Gateway
IVR
LSM
Mailbox
Access
Universal
Messaging
Telephone
...including the
kitchen sink
Laptop
“New” phone
Two-Way
Pagers
Modem
Cellular
Phone
Fax Machine
Trad.
Pager
Figure 1.2: Universal Messaging