Sangoma Netborder SS7, User Manual

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SS7 ISUP
SS7 is a signaling protocol, it is used to carry call control information such as call start, call progress,
call hangup etc. The SS7 call control information is used to control arbitrary number of voice
channels that are carried using T1/E1 spans.
In a typical SS7 setup the telco will provide you with SS7 information that will be used to map T1/E1
physical spans and channels into SS7 call control information.
The NSG TDM SS7 configuration page has been designed as bottom up SS7 configuration approach.
1. Identify T1/E1 spans on your system
2. For each T1/E1 span on your system:
a. Determine which T1/E1 spans will carry SS7 Link channels
b. T1/E1 Span can either carry an
i. SS7 Link in one of its channels or
ii. All T1/E1 channels can be used to carry voice.
c. Configure T1/E1 physical configuration parameters
d. Identify if T1/E1 span carries SS7 link or is Voice Only
e. If T1/E1 span has an SS7 link associate with it:
i. Create a new SS7 Link
ii. Next step is to bind the new SS7 Link to an SS7 Linkset.
iii. If an SS7 Link set does not exist, Create a new SS7 Link Set
iv. Then bind the SS7 Link to an existing or new SS7 Link Set
v. Next step is to bind the SS7 Linkset into an SS7 Route.
vi. If an SS7 Route does not exist, Create a new SS7 Route
vii. Then bind the SS7 Linkset to an existing or new SS7 Route
viii. Next step is to bind the SS7 Route into an SS7 ISUP Interface
ix. If an SS7 ISUP Interface does not exist, Create a new SS7 ISUP Interface
x. Then bind the SS7 Route to an existing or new SS7 ISUP Interface
f. The Last step is to assign CIC values to each physical T1/E1 timeslot in the span.
Whether the Span carries only voice or it contains the SS7 Link, each timeslot must be
associated with a SS7 CIC value.
This way when an incoming SS7 Call Start message arrives with an arbitrary CIC value.
The NSG system can open the appropriate physical voice channel associated with the
CIC value.