Dialogic 6.2 manual Inter-register Signaling, November 341

CPE Signaling Model

Figure 52 illustrates an example inter-register exchange in which the inbound protocol is configured to collect DNIS digits first, followed by collection of ANI information, and concluding with the exchange of DNIS category and called line condition. However, variations on this exchange are possible, resulting from different settings of the inbound protocol control parameters and the absence of certain signals in a given variant. For instance, the inbound protocol is configured to request ANI information following reception of N DNIS digits. Following completion of ANI collection, the DNIS collection is resumed. Another example is that a certain variant might not define the forward signal that indicates the end of the DNIS string. In this case, the inbound protocol must count the DNIS digits and signal a request for other information when the required number of DNIS digits has been collected.

Enabling the R2 Protocol on page 342 provides further detail on the protocol control parameters, protocol signals, and protocol processing actions provided by the Brooktrout R2 stack.

Forward

Channel (calling from number 98)

DNIS "digit" 1

Send next DNIS digit

DNIS "digit" 2

Send next DNIS digit

DNIS complete

Send ANI information

ANI catagory

Send next ANI

ANI digit "9"

Send next ANI

ANI digit "8"

Send next ANI

ANI complete

Send DNIS catagory

DNIS catagory

Called line condition (free, busy, etc.)

Backward

Channel (called

number is 12)

Figure 52. Inter-register Signaling

November 2009 341