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Hi Team,
We were used EPM 7.0.2/OD 7.0.
Then we deployed new EPM 8.1.2/OD 8.1.2 with same flow on previous version.
As a results, voice browser hangs when executing certain call flows.
1. Run the application created by OD on EP
2. Execute some menu selection on the call flow
3. Phone goes silent and disconnects after menu selection
At first step of my investigation, we created a test flow using the grammar we used previous version.
The test flow has 4 Prompt&Collect, and each Prompt&Collect calls the provided grammar as follows.
"TestCustomGrammar" below is the OD flow name.
Prompt&Collect node:
1st: /TestCustomGrammar/data/Japanese/grammars/grammar_Input_ContractS.grxml
2nd: /TestCustomGrammar/data/Japanese/grammars/grammar_Input_Service2.grxml#main_rule
3rd: /TestCustomGrammar/data/Japanese/grammars/grammar_FcSelService__Dealings.grxml#main_rule
4th: /TestCustomGrammar/data/Japanese/grammars/grammar_RefDetail_KamokuInput.grxml#main_rule
Next, we tried to reproduce this issue with combination of EPM and OD version using sample flow with same grammar file.
As a results, we can say that this issue were occurred when we used EP8.1.
Case1: EP7.0 / OD7.0.1 - OK
Case2: EP8.1.2 / OD8.1.2 - NG
Case3: EP8.1.2 / OD7.0.1 - NG
Case4: EP7.0 / OD8.1.2 - OK
In NG case, 1st and 2nd Prompt&Collect node were working well. Then we confirmed same issue was occurred on 3rd Prompt&Collect node.
If we tried to add “#main_rule” id after 1st uri as below, we confirmed same issue was occurred on 1st Prompt&Collect node.
1st: /TestCustomGrammar/data/Japanese/grammars/grammar_Input_ContractS.grxml#main_rule
2nd: /TestCustomGrammar/data/Japanese/grammars/grammar_Input_Service2.grxml#main_rule
3rd: /TestCustomGrammar/data/Japanese/grammars/grammar_FcSelService__Dealings.grxml#main_rule
4th: /TestCustomGrammar/data/Japanese/grammars/grammar_RefDetail_KamokuInput.grxml#main_rule
Furthermore we confirmed all of Prompt&Collect node can be work without “#main_rule” id after uri as below.
1st: /TestCustomGrammar/data/Japanese/grammars/grammar_Input_ContractS.grxml
2nd: /TestCustomGrammar/data/Japanese/grammars/grammar_Input_Service2.grxml
3rd: /TestCustomGrammar/data/Japanese/grammars/grammar_FcSelService__Dealings.grxml
4th: /TestCustomGrammar/data/Japanese/grammars/grammar_RefDetail_KamokuInput.grxml
As a results, we can say that this issue was only occurred when we use “EP8.1.2” or “ #main_rule” after each uri on Avaya Japan lab.
Please advise whether the specification change or the supported node requirements change for the Voice Browser between EP/OD7.0 and EP/OD8.1.2 are there or not?
In our investigation, if grammar file has multiple rule id like below, if we add rule id after uri, Voice Browser didn't hung up.
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1st: /TestCustomGrammar/data/Japanese/grammars/grammar_Input_ContractS.grxml#main_rule
-- grammar_Input_ContractS.grxml --
<?xml version="1.0" encoding="UTF-8"?>
<grammar version="1.0" xml:lang="ja-JP" root="main_rule" mode="dtmf" tag-format="semantics/1.0" xmlns="http://www.w3.org/2001/06/grammar">
<rule id="main_rule" scope="public">
<item><ruleref uri="#main_sub_rule"/>#</item>
</rule>
<rule id="main_sub_rule" scope="public">
<one-of>
<item repeat="8"><ruleref uri="#number"/></item>
<item repeat="10"><ruleref uri="#number"/></item>
</one-of>
</rule>
<rule id="number" scope="public">
<one-of>
<item>0</item>
<item>1</item>
<item>2</item>
<item>3</item>
<item>4</item>
<item>5</item>
<item>6</item>
<item>7</item>
<item>8</item>
<item>9</item>
</one-of>
</rule>
</grammar>
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If grammar file has single "rule id" like below, if we add rule id after uri, Voice Browser will be hung up.
Is this estimated results?
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4th: /TestCustomGrammar/data/Japanese/grammars/grammar_RefDetail_KamokuInput.grxml#main_rule
-- grammar_RefDetail_KamokuInput.grxml --
<?xml version="1.0" encoding="UTF-8"?>
<grammar version="1.0" xmlns="http://www.w3.org/2001/06/grammar" tag-format="semantics/1.0" mode="dtmf" root="main_rule">
<rule id="main_rule" scope="public">
<one-of>
<item>1#</item>
<item>2#</item>
<item>3#</item>
<item>4#</item>
<item>6#</item>
<item>7#</item>
</one-of>
</rule>
</grammar>
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Best regards, K.Yamahara
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