Refer to the exhibit. Which pattern will be advertised try the Cisco Unified Communications Manager?
A. 3XXX and the ToDID will be 0:.
B. 3XXX and the TnOID will be 0:44228822.
C. 3XXX and the ToDID will be 44228822.
D. 3XXX and the ToDID will be 0:+44228822.
E. 3XXX and the ToDID will be 0:+
I feel the answer is B
I believe the answer is C not A (A is incorrect because in the graphic the 0 refers to digits stripped not an actual 0 to be added)
When rerouting over the PSTN is desired, call agents are configured not only to advertise their internally used number ranges, but also with the corresponding PSTN numbers. The PSTN number is not advertised as a distinct number; it is advertised by a PSTN failover digit-transformation rule (known as a ToDID rule).
A ToDID rule describes how the internally used number has to be manipulated to get to the associated PSTN number. A ToDID rule consists of two components:
■ Number of digits to be stripped: The first part of a ToDID rule is the number of digits
to be stripped from the internally used number. For example, if site-code dialing is
used and the internally used number to reach a block of directory numbers is 8-408-
2XXX, you might want to strip the leading 8408 before prefixing the necessary digits
to directory-number range 2XXX. In this case, your ToDID rule starts with 4: because
the four leading digits should be stripped.
■ Prefix to be added to the (deflated) internal number: The second part of a ToDID
rule is the prefix that should be added to the internally used number after digit stripping
has been performed. In the previous example, if the PSTN direct inward dialing
(DID) range of the internally used directory-number range 2XXX (dialed as 8-408-
2XXX from other sites) is 408 555-2XXX, the prefix would be 408555. Usually,
The answer is correct: A
Step 4: Configure Hosted DN Group
The figure shows the configuration of a hosted DN group in Cisco Unified Communications Manager.
The hosted DN group will be referenced from hosted DN patterns. If all—or at least most—of the associated hosted DN patterns share the same ToDID rules, you can configure the ToDID rule at the hosted DN group. The settings of the hosted DN group are applied to the hosted DN patterns if the hosted DN pattern parameters are unset.
The Use Hosted DN as PSTN Failover check box instructs Cisco Unified Communications Manager to create a ToDID rule of 0:. As a result, the number that is to be used for PSTN backup is identical to the internally used number. Usually, this result occurs only when TEHO patterns are advertised.
https://ccieme.wordpress.com/2016/11/13/16-12-saf-and-ccd-configuration/