EasyManuals Logo

DBL Technology GoIP User Manual

DBL Technology GoIP
63 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #56 background imageLoading...
Page #56 background image
GoIP User Manual
http://www.dbltek.com
55
Appendix B. SMS To VoIP
The device receives SMS messages from both GSM and VoIP networks and they are handled according to the
modes defined below.
1. Call Function In this mode, a received SMS is used to implement the “Call Back function. The concept is
to establish a phone call between the called party and the calling party. The phone number of the called
party is specified in the GSM SMS message received. The phone number of the calling party is the SMS
senders number. The device then sends a SIP INVITE message containing these phone numbers to the
SIP Server registered. Three different SIP INVITE message formats are supported and are described
below.
a) Mode 1
SIP Message format:
- The To” field in the SIP INVITE message contains the phone number of the called party.
- The “From” field contains the phone number of the calling party.
Once the SIP server receives these two numbers via a SIP INVITE message, it then terminates the SIP
call (SIP INVITE) and then call both parties via its own phone network. The device may or may not
take part in the actual call conversation.
Example:
SMS content = 8675588228822
Senders number = 861380000000
SIP Server IP = 192.168.2.1
SIP Number = 20001
The INVITE message sent to the SIP Server is:
INVITE sip:8675588228822@192.168.2.1:5060;transport=udp SIP/2.0
Via: SIP/2.0/UDP 192.168.2.237:5060;branch=z9hG4bK363969813
From: <sip:8613800000000@192.168.2.1:5060>;user=phone;tag=65248630
To: <sip:8675588228822@192.168.2.1>
Call-ID: 117025903@192.168.2.237
CSeq: 2 INVITE
Contact: <sip: 8613800000000@192.168.2.237:5060>
Max-Forwards: 30
User-Agent: DBL
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REFER, REGISTER, MESSAGE, INFO, SUBSCRIBE
Content-Type: application/sdp
Content-Length: 226
b) Mode 2
SIP Message format:
- The To” field in the SIP INVITE message contains the phone number of the called party.
- The “From” field contains the SIP number of the line that is associated with the GSM channel
- Note: The VoIP configuration of the device must be set to Config. By Line mode.
Only the phone number of the called party is passed to the SIP server via a SIP INVITE message. This
mode is designed to use the GSM channel of the device to complete the Call Back function. Therefore,

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the DBL Technology GoIP and is the answer not in the manual?

DBL Technology GoIP Specifications

General IconGeneral
BrandDBL Technology
ModelGoIP
CategoryGateway
LanguageEnglish

Related product manuals