APPENDIX 5
Glossary of Terms (continued)
SMS Message Centre
SMS messages are not sent ‘directly’ from one GSM phone (or DualCom)
to another GSM phone. All messages are first sent to a Message Centre
operated by the GSM Network Provider and then forwarded to the selected
mobile phone(s). This normally takes a few seconds but delays of 30 min-
utes or more may be experienced during busy periods.
WEB SITE The CSL Internet Web Site
The CSL web site: www.csldual.com contains the latest cop-
ies of all manuals for all CSL products. Please ensure that you are working
from the latest version. You can also download associated information and
software samplers. CSL sales, shipping and contact information is here too.
3-Way-Calling
This is a service provided by some telecommunication service providers. BT
in UK offer this service. When a call is in progress on a telephone line it is
possible to send a signal via that line to the equipment at the telephone
exchange. The exchange will put the current call on ‘hold’ and provide a
dialling tone so that another outgoing call may be made. When this second
call has finished a signal to the exchange will disconnect the second call
and re-connect the first one that was put on ‘hold’.
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