Which statement about what happens to a Cisco IOS SIP VoIP dial-peer that never received any responses to its out-of-dialog OPTIONS ping is true?
Click on the arrows to vote for the correct answer
A. B. C. D. E.A.
You can check the validity of your dial peer configuration by performing the following tasks:If you have relatively few dial peers configured, you can use the show dial-peer voice command to verify that the configuration is correct.
To display a specific dial peer or to display all configured dial peers, use this command.
The following is sample output from the show dial-peer voice command for a specific VoIP dial peer: router# show dial-peer voice 10 VoiceOverIpPeer10 - tag = 10, dest-pat = \Q', incall-number = \Q+14087', group = 0, Admin state is up, Operation state is down Permission is Answer, type = voip, session-target = \Q', sess-proto = cisco, req-qos = bestEffort, acc-qos = bestEffort, fax-rate = voice, codec = g729r8, Expect factor = 10,Icpif = 30, VAD = disabled, Poor QOV Trap = disabled, Connect Time = 0, Charged Units = 0 Successful Calls = 0, Failed Calls = 0 Accepted Calls = 0, Refused Calls = 0 Last Disconnect Cause is "" Last Disconnect Text is "" Last Setup Time = 0 -To show the dial peer that matches a particular number (destination pattern), use the show dialplan number command.
The following example displays the VoIP dial peer associated with the destination pattern 51234: router# show dialplan number 51234 Macro Exp.: 14085551234 - VoiceOverIpPeer1004 - tag = 1004, destination-pattern = \Q+1408555....', answer-address = \Q', group = 1004, Admin state is up, Operation state is up type = voip, session-target = \Qipv4:1.13.24.0', ip precedence: 0UDP checksum = disabled session-protocol = cisco, req-qos = best-effort, acc-qos = best-effort, fax-rate = voice, codec = g729r8, Expect factor = 10, Icpif = 30, VAD = enabled, Poor QOV Trap = disabled Connect Time = 0, Charged Units = 0 Successful Calls = 0, Failed Calls = 0 Accepted Calls = 0, Refused Calls = 0 Last Disconnect Cause is "" Last Disconnect Text is "" Last Setup Time = 0 - Matched: +14085551234 Digits: 7 - Target: ipv4:172.13.24.0
When a Cisco IOS SIP VoIP dial-peer sends out an OPTIONS ping to its destination, it expects to receive a response within a certain amount of time. If it does not receive a response, the behavior of the dial-peer depends on its configuration.
Option A: Its admin state will be up but operational state will be down.
This option is incorrect because if the dial-peer never received any responses to its out-of-dialog OPTIONS ping, its admin and operational state will both be down. This is because the dial-peer is unable to establish a connection with the destination.
Option B: Its admin and operational state will be down.
This option is correct. If the dial-peer never received any responses to its out-of-dialog OPTIONS ping, its admin and operational state will both be down. This means that the dial-peer is unable to establish a connection with the destination.
Option C: Its admin and operational state will remain up.
This option is incorrect because if the dial-peer never received any responses to its out-of-dialog OPTIONS ping, its admin and operational state will both be down. This means that the dial-peer is unable to establish a connection with the destination.
Option D: Its admin state will be up but operational state will be "busy-out".
This option is incorrect because the "busy-out" state is typically used when a dial-peer is intentionally unavailable due to congestion or maintenance. If the dial-peer never received any responses to its out-of-dialog OPTIONS ping, its admin and operational state will both be down.
Option E: Its admin and operational state will be "busy-out".
This option is incorrect for the same reason as option D.
In conclusion, option B is the correct answer. If a Cisco IOS SIP VoIP dial-peer never received any responses to its out-of-dialog OPTIONS ping, its admin and operational state will both be down.