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Exam 350-801 topic 1 question 204 discussion

Actual exam question from Cisco's 350-801
Question #: 204
Topic #: 1
[All 350-801 Questions]

When a call is delivered to a gateway, the calling and called party number must be adapted to the PSTN service requirements of the trunk group. If a call is destined locally, the + sign and the explicit country code must be replaced with a national prefix. For the same city or region, the local area code must be replaced by a local prefix as applicable. Assuming that a Cisco UCM has a SIP trunk to a New York gateway (area code 917), which two combinations of solutions localize the calling and called party for a New York phone user? (Choose two.)

  • A. Configure the gateway to translate the calling number and apply it to the dial peer. Combine it with a translation profile for called numbers. ! voice translation-rule 1 rule 1 /^1917/ // rule 2 /^ [+]1917/ // ! voice translation-profile strip+1 translate calling 1 !
  • B. Configure two calling party transformation patterns: \+1917.CCCCCC, strip pre-dot, numbering type: subscriber \+!, strip pre-dot, numbering type: national
  • C. Configure two called party transformation patterns: \+1917.XXXXXXX, strip pre-dot, numbering type: subscriber \+1.!, strip pre-dot, numbering type: national
  • D. Configure the gateway to translate called numbers and apply it to the dial peer. Combine it with a translation profile for calling numbers. ! voice translation-rule 1 rule 1 /^1917/ // rule 2 /^[+]1917/ // ! voice translation-profile strip+1 translate called 1 !
  • E. Configure two calling party transformation patterns: \+1917.XXXXXXX, strip pre-dot, numbering type: subscriber \+1.!, strip pre-dot, numbering type: national
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Suggested Answer: CE 🗳️
by OSJAY at Sept. 11, 2022, 11 p.m.

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DaKenjee
Highly Voted 2 years, 5 months ago
Selected Answer: CE
Answer C+E First we have to adjust calling + called and a mixture by gateway normalization + callmanager normalization makes no sence. Answer E is working for +1917 local->subscriber and +1 -> national signaling Gateway Calling Party Number Localization: As a call is delivered to a gateway, the calling party number must be adapted to the requirements of the PSTN service provider providing the trunk group to which the gateway is connected. Calling Party Number Transformation patterns can be used to change the calling party number digit string and numbering type. They even use same wording like in question: \+1.!, strip pre-dot, numbering type: national When a call egresses to a gateway, the calling and called party transformation patterns are applied to the calling and called numbers respectively. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab12/collab12/dialplan.html
upvoted 9 times
WeNt48
2 years, 2 months ago
Have you ever tried to pass type information over SIP Trunks? https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/10_0_1/ccmsys/CUCM_BK_SE5FCFB6_00_cucm-system-guide-100/CUCM_BK_SE5FCFB6_00_cucm-system-guide-100_chapter_0101001.html "SIP does not support the number type, so calls through SIP trunks only support the Incoming Calling Party Unknown Number (prefix and digits-to-strip) settings." Key wording here is "Cisco UCM has a SIP Trunk to a New York gateway" and that means any setup going with type is invalid. Whole setup must be done on gateway otherwise it add unnecessary complexity to setup.
upvoted 1 times
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wwisp3422112
2 years, 5 months ago
I agree with DaKenjee: CE correct. If u want to remember the answers to the exam just think about: "XXXXXXX"
upvoted 4 times
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b3532e4
Most Recent 7 months, 4 weeks ago
B: Configure transformation patterns to strip "+" and adapt to local numbers. E: Apply transformation patterns for proper local routing.
upvoted 1 times
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WeNt48
2 years, 2 months ago
Selected Answer: AD
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/10_0_1/ccmsys/CUCM_BK_SE5FCFB6_00_cucm-system-guide-100/CUCM_BK_SE5FCFB6_00_cucm-system-guide-100_chapter_0101001.html "SIP does not support the number type, so calls through SIP trunks only support the Incoming Calling Party Unknown Number (prefix and digits-to-strip) settings." Key wording here is "Cisco UCM has a SIP Trunk to a New York gateway" and that means any setup going with type is incorrect. Whole configuration must be done on gateway otherwise it add unnecessary complexity.
upvoted 3 times
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Panda_man
2 years, 3 months ago
Selected Answer: DE
D and E are correct
upvoted 2 times
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santiagof
2 years, 6 months ago
A and D , are correct, configuring 2 calling or 2 called translation ( b c and d options), wont do it , because just one takes effect in the call.
upvoted 3 times
WeNt48
2 years, 2 months ago
Correct. SIP Trunks doesn't transmit numbering type information in signalization. Whole configuration must be completed on gateway, and that means only A and D are correct.
upvoted 3 times
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OSJAY
2 years, 8 months ago
None of the answers convince me. I would do: voice translation-rule 1 rule 1 /^1917/ // rule 2 /^[+]1/ // ! voice translation-profile strip+1 translate called 1 translate calling 1 Apply as Outbound profile to outbound DP
upvoted 3 times
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