Which of the following four CRS components must be active on a Historical Reporting Database (HRDB) and Call Recording expansion server?（）

多项选择题HowdoestheExtendedGetDigitStringstepdifferfromtheGetDigitString?（）

A.It can be used in conjunction with another step. 
B.It allows the application programmer into another section of the application. 
C.Most of the Extended Get Digit String variables can be changed while the application is running. 
D.It allows the entry of a Boolean expression for the Interruptible and Clear DTMF Buffer on Retry fields.

单项选择题Whatlevelofcontroldoesasubflowhaveontheoverallcontact?（）

A.The subflow cannot call additional or "nested" subflows. 
B.The subflow cannot transfer the contact to another resource. 
C.The subflow has full contact control and can perform any action that the parent flow can perform.

单项选择题WhatformuladoyouusetocomputethenumberofIVRports?（）

A.Erlang B 
B.Erlang C 
C.AHT * BHCA 
D.VG ports + CTI ports 

单项选择题HowdoestheCRSServerknowthatithasreceivedanASR-enabledcontact?（）

A.The workflow has ASR steps in it. 
B.The contact is on an ASR Dialogue Group channel. 
C.The contact is on a JTAPI Call Control Group channel. 
D.The contact is on a Cisco Media Dialogue Group channel.

多项选择题WhattwothingshappenwhentheCRSPublisherDatabaseonanHRDBexpansionserverfails?（）

A.All call processing immediately begins using the CRS Subscriber Database. 
B.Calls in queue are dropped. 
C.Agent calls are dropped. 
D.Agents are automatically logged out. 
E.CRS configuration changes are blocked until the CRS Publisher Database is restored and synchronized with the CRS Subscriber Database. 
F.Configuration changes are buffered until the CRS Publisher Database is restored.