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CDMA2000 Signaling
R&S
®
CMW-KM8xx/-KS8xx
490
User Manual 1173.9511.02 ─ 12
Text
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4.2.15.5
Receive Method
A message can be received while the R&S
CMW is in "Registered" or in "Connected"
state. Receiving messages happens without any interaction of the user.
The R&S
CMW supports three different options to receive messages
●
Traffic Channel (TCH)
When a call is already connected the message will be transported on the open
Traffic Channel.
●
Access Channel (ACC)
When an MS is in registered state, it is possible to transport messages using the
Access Channel, without connecting a call.
●
Service Option x
When an MS is in registered state, the MS tries to connect a call using a supported
service option. Which service option is used is decided by the MS. After the
R&S
CMW received the message, the call is disconnected.
This leads to a temporary "Connection" state of the R&S
CMW during the reception
of the message.
Information about the received SMS and how the SMS was transmitted is displayed for
the last message at "MS Info > Messaging (SMS) Info > Last Received Message" or
can be reviewed by selecting it, see
"Received Messages > Select File..."
The other DBM messages (other than SMS) can be read via the com-
mands
...:RECeive:READ?
.
The messages are stored in the default directory
D:\Rohde-Schwarz\CMW\Data\sms\CDMA2000\Received
. The SMS file name
has following structure:
rx<nnnnnn>.sms
with
<nnnnnnn>
is a 6 digit number with
leading zeros to support sorting by name.
The R&S
CMW saves up to 100 files in its directory. Afterwards it will delete the oldest
file in directory and save the new received message with the released number. I.e.
R&S
CMW receives SMS number 101. Since the oldest file in the directory is SMS
number 1
rx000001.sms
the CMW deletes it and saves the new received file with the
name
rx000001.sms
.
At R&S
CMW startup all files in the receive directory are deleted and the message file
counter is reset to 1.
General Description
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