To administer MF signaling, you must first identify the origination and destination server or media servers. The one making the call is the origination server. The one answering the call is the destination server.

• The origination server or media server creates forward signals, classified as group I and group II signals.

• The destination server or media server creates backward signals, classified as group A and group B signals.

Group I and group A signals comprise the basic signaling for the dialed number. More elaborate signaling requires Group II and group B signals. Signal meanings and timer values can be administered.

The following sequence shows a typical interaction between the origination server (forward group I and group II signals) and destination server (backward group A and group B signals).

Forward			Backward
Group I	digit	-->
	<--	A.1	Group A
	digit	-->
	<--	A.1
	digit	-->
	<--	A.1
	digit	-->
	<--	A.1
	digit	-->
	<--	A.3	End of dial
Group II	II.2	-->
	<--	B.x	Group B

Second, you assign the correlation between signal codes and their meanings.

1. Assign a code to each message. The code consists of a group category, like group II or A, and a number.

   • For example, you might assign code A.1 to the message next-digit.

2. Assign a signal to each identifying code.

   • In every country, the frequencies (levels might differ by country) assigned to the identifying codes are the same. However, the messages assigned to the identifying codes can be different.

     For example, in Switzerland the B.6 code and its associated signal convey the free message, while in Thailand, free is conveyed by the B.1 code and its associated signal. But in both Switzerland and Thailand, the frequency associated with the B.1 code is the same.

     As another example, you might assign the signal busy to the B.1 code.

To receive Russian incoming ANI:

• On the DID or DIOD Trunk Group screen, set the Country field to 15 and the Protocol Type field to inloc.

• On the AAR and ARS Digit Analysis Table screen, set the ANI Req field to y, or on the AAR and ARS Digit Conversion Table screen, set the ANI Req field to y.