300-070 · Question #384
An Engineer enters this configuration on a voice router Dial-peer voice 99 pots destination-pattern 115. Port 1/0/0 Which digits does the router send out of the port 1/0/0 after the user dial the…
The correct answer is E. 9. POTS dial-peers perform automatic digit stripping, removing the explicitly matched destination-pattern digits before forwarding the remainder out the configured port.
Question
An Engineer enters this configuration on a voice router Dial-peer voice 99 pots destination-pattern 115. Port 1/0/0 Which digits does the router send out of the port 1/0/0 after the user dial the digits 1159?
Options
- A1159
- B115
- C59
- D11
- E9
How the community answered
(33 responses)- A3% (1)
- C12% (4)
- D6% (2)
- E79% (26)
Why each option
POTS dial-peers perform automatic digit stripping, removing the explicitly matched destination-pattern digits before forwarding the remainder out the configured port.
Sending all four dialed digits would only occur if the 'no digit-strip' command were applied to the POTS dial-peer, which is not configured here.
Forwarding '115' would mean no stripping occurred at all, but POTS dial-peers strip the matched pattern digits by default.
Forwarding '59' would result only if the single digit '1' were stripped, which does not reflect how the full pattern '115' is removed.
Forwarding '11' would imply only '5' was stripped, which contradicts the rule that the entire matched destination-pattern string is removed.
When destination-pattern '115' matches the first three digits of the dialed string '1159', the router strips those matched explicit digits, leaving only '9' to be forwarded out port 1/0/0. This default digit-stripping behavior is specific to POTS dial-peers and does not apply to VoIP dial-peers.
Concept tested: POTS dial-peer automatic digit stripping
Source: https://www.cisco.com/c/en/us/support/docs/voice/voice-quality/14081-pots-digit-strip.html
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