User`s guide

4-3
4.1.4 Requesting a Voice Phone Number or SMS Service
As mentioned earlier some cellular service providers do not support the ability to place a
data call to the DCM-200 in CSD mode. This is called “mobile-terminate” service.
If purchasing GPRS (Internet) service it is important to know that the DCM-200 can only
originate an Internet connection. It cannot be contacted via the Internet. See Chapter-7
for more information.
Yet there may be times when it is desirable to communicate immediately with the DCM-
200 or ANSI electric meter rather than wait for it to call in. To overcome these limitations
the DCM-200 supports the ability to be “paged”. When paged, the DCM-200 will
immediately call back to the central computer.
There are two ways to page, and these are described in Chapter-7. If the cellular
account has been assigned a “voice” phone number then the unit can be called using
this number. Otherwise most cellular providers can include SMS (short message
service) as part of the package. This allows the DCM-200 to be paged with a text
message (email).
If you are going to use paging, then the phone number or email address will have to be
entered into the DC-2000 data collection database or into an email address list. This
can be quite tedious if you are going to be installing hundreds of units. The cellular
service provider will give you a small memory card called a SIM card that will be installed
in the radio. They can program the voice phone number into the card, and the DCM-200
can read this number and report it to the DC-2000 data collection system. Even if you
are using SMS, the email address of the unit is often created using the voice or data
phone number as part of the address, such as [e-mail]
.
Most SIM cards have spaces to hold three phone numbers. Ask your cellular provider to
program the voice number into the first
location. If they support “mobile-terminate” CSD
service then have them program the data number into the first
location. If you are going
to use SMS, ask what the SMS address will be, and have them program the base
number into the first
SIM location.
4.1.5 SIM Card Installation
After the account has been established, the cellular service provider will provide a small
memory card known as a SIM card (Subscriber Identity Module). Figure 4-1 illustrates
the appearance of a SIM card.
Figure 4-1
SIM Card Profile