Patton electronic SmartNode 4110 Series manual Planning the CS context, CS Configuration

SmartWare Software Configuration Guide 31 • CS context overview

•Calls from office A or B with number 5xx to office C

•All other calls from office A or B to the PSTN (local breakout)

Gateway

H.323

H.323 interface: IF-COMPOFF-A

H.323 interface: IF-COMPOFF-B
			Session
	Context CS		Router
	switch
	PSTN interfaces
	IF-PUBLIC-PSTN1
	and
	IF-PUBLIC-PSTN2
	Port	Port	Port	Port
PSTN	ISDN	ISDN	ISDN	ISDN
	2/3	2/2	2/1	2/0

PSTN interfaces:

IF-PBX1

and

IF-PBX2

PBX

Figure 51. CS Configuration

Planning the CS context

Based on the criteria used in the previous example, the following configuration information applies (see figure 51):

•It is very important to specify from where to get the clock source for the packaging of the ISDN voice frames. In the example we are connected to the PSTN network and get the clock source from the ISDN over the ISDN port 2/3.

•We need four BRI ports, two for the PSTN and another two for the PBX. (Refer to section “Configuring ISDN ports” on page 348).

•Furthermore we need four ISDN interfaces. Then we have to bind each BRI port to one of the ISDN inter- faces. A hunt group that summarizes two ISDN interfaces is configured later during call router configura- tion.

•For every remote H.323 device we need a H.323 interface. There are two in total. One gets the remote IP address of the SmartNode in office A, the other the IP address of the SmartNode in office B. (Refer to sec- tion “Configuring call routing” on page 345).

•We need a call router routing table to route the calls depending on the called party number. (Refer to sec- tion “Configuring call routing” on page 345).

•We further need two hunt groups, one that hunts calls to the two BRI interfaces to the PSTN and one for the two BRI interfaces to the PBX.

•Then we need two other hunt group that tries to make a call over a VoIP and if this fails, falls back to the PSTN.

Activating CS context configuration 352