CAS R2 BACK DIGITS - Revision history

Luc Morissette at 15:26, 9 November 2018

2018-11-09T15:26:00Z

2018-10-22T19:34:14Z

LM Added dial plan examples and end_of_called number

2018-03-12T13:31:59Z

2018-03-12T13:30:59Z

Clarifiaction

2018-03-08T18:04:20Z

2013-06-03T21:25:06Z

Added dial plan extension

2013-04-22T21:07:39Z

Added 'G' symbol from release 2.7

2011-12-13T19:22:23Z

2011-12-13T19:21:56Z

Add link to web portal tutorial

2011-12-13T16:02:57Z

moved Setting the CAS R2 BACK DIGITS variable to CAS R2 BACK DIGITS: Rename this page, create a new page in Web Portal Tutorial section.

@@ Line 63: / Line 63: @@
    --  Matching pattern        Number of called number digits to request
      { "^12",                  6  }, -- Expect 6 called number digits, must start with "12" to match
-     { "^0",                   10 }, -- Expect 4 digits total, start with 0
+     { "^0",                   4  }, -- Expect 4 digits total, start with 0
      { "^[23456789]",          10 }  -- Expect 10 digits total, start with everything except 0 and 1
      -- If no matching pattern works, an unlimited number of called number digits

@@ Line 62: / Line 62: @@
+   {
    --  Matching pattern        Number of called number digits to request
-     { "^12",                  6 }, -- Expect 6 called number digits, must be
+     { "^12",                  6  }, -- Expect 6 called number digits, must start with "12" to match
-                                   -- before "^1" because otherwise it wouldn't
+    { "^0",                   10 }, -- Expect 4 digits total, start with 0
-                                   -- be matched
+     { "^[23456789]",          10 }  -- Expect 10 digits total, start with everything except 0 and 1
-     { "^1",                   4 }  -- Expect 4 digits total
      -- If no matching pattern works, an unlimited number of called number digits
      -- are requested until the remote equipment stops providing them.
    };

← Older revision		Revision as of 13:31, 12 March 2018
Line 69:		Line 69:
	-- are requested until the remote equipment stops providing them.		-- are requested until the remote equipment stops providing them.
	};		};
−
−	~~[[category:Needs revising]]~~

@@ Line 8: / Line 8: @@
 [[File:Casr2_fwd_bwd_diagram.png]]
-In most implementations, the information available from CAS R2 signaling is exchanged with a compelled sequences of tones. A compelled sequence consists into the forward end emitting a digit and the backward end responding with a second digit. The backward end confirms reception of the digit by stopping to emit, and waits for the forward end to do so as well to initiate the next sequence. In a way, the forward end is mostly passive: it responds to backward end requests, except when the requests cannot be met, or for the first sequence.
+In most implementations, the information available from CAS R2 signaling is exchanged with a compelled sequences of tones. In a compelled sequence, the forward end sends a digit and the backward end responds with a second digit. The backward end confirms reception of the digit by stopping to emit, and waits for the forward end to do so as well to initiate the next sequence. In a way, the forward end is mostly passive: it responds to backward end requests, except when the requests cannot be met, or for the first sequence.
 One way of representing such exchanges can be expressed as follows:

@@ Line 8: / Line 8: @@
 [[File:Casr2_fwd_bwd_diagram.png]]
-In most implementations, the information available from CAS R2 signaling is exchanged through compelled sequences of tones. A compelled sequence consists into the forward end emitting a digit and the backward end responding with a second digit. The backward end confirms reception of the digit by stopping to emit, and waits for the forward end to do so as well to initiate the next sequence. In a way, the forward end is mostly passive: it responds to backward end requests, except when the requests cannot be met, or for the first sequence.
+In most implementations, the information available from CAS R2 signaling is exchanged with a compelled sequences of tones. A compelled sequence consists into the forward end emitting a digit and the backward end responding with a second digit. The backward end confirms reception of the digit by stopping to emit, and waits for the forward end to do so as well to initiate the next sequence. In a way, the forward end is mostly passive: it responds to backward end requests, except when the requests cannot be met, or for the first sequence.
 One way of representing such exchanges can be expressed as follows:

@@ Line 57: / Line 57: @@
 '''(2.7+ only)''' The 'G' symbol may be used to indicate that '1's should be sent until no digit or a 'F' is received. The BACK_DIGITS thus becomes the following:
   BACK_DIGITS = "G5A3V"
 [[category:Needs revising]]

← Older revision		Revision as of 21:07, 22 April 2013
Line 54:		Line 54:

	With such a string, the only thing to worry about is the length of the called number. If the called number length may vary, the number of '1's must match the longest possible number. In the case where the forward end receives a '1' when it has sent all its digits, the conventional way of handling this is for the forward end to not emit anything for a while, until the backward end detects this condition and requests something else. In this case, the default scripts in Toolpack will handle this case gracefully and skip the remaining '1's found in the BACK_DIGITS variable.		With such a string, the only thing to worry about is the length of the called number. If the called number length may vary, the number of '1's must match the longest possible number. In the case where the forward end receives a '1' when it has sent all its digits, the conventional way of handling this is for the forward end to not emit anything for a while, until the backward end detects this condition and requests something else. In this case, the default scripts in Toolpack will handle this case gracefully and skip the remaining '1's found in the BACK_DIGITS variable.
		+
		+	'''(2.7+ only)''' The 'G' symbol may be used to indicate that '1's should be sent until no digit or a 'F' is received. The BACK_DIGITS thus becomes the following:
		+	BACK_DIGITS = "G5A3V"

	[[category:Needs revising]]		[[category:Needs revising]]

@@ Line 1: / Line 1: @@
 The default CAS R2 scripts included with Toolpack present a way to configure the sequence of tone requests sent by the backward end.
-To learn how to set a CAS R2 variable in Toolpack, refer to the [[Web_Portal]] Tutorial Guide.
+To learn how to set a CAS R2 variable in Toolpack, refer to the latest [[Web_Portal]] Tutorial Guide.
 ''The digit meanings in this article are the ones defined in the [[CAS R2 ITU specification]]. Digit meanings may vary depending on the variant specification.''