Which two Cisco Unified Border Element configurations resolve this issue?

Refer to the exhibit. An engineer is working on a ticket that reports TEL1 cannot call TEL2.
These dial peers are configured to route the call between the endpoints.
dial-peer voice 2001voip destination-pattern 2001 session protocol sipv2 session target ipv4:10.1.1.2 incoming called-number.
codec g722-64 video codec h264
dtmf-relay rtp-nte sip-notify sip-kpml no vad
dial-peer voice 3001 voip destination-pattern 3001 session protocol sipv2 session target ipv4:10.3.1.2 incoming called-number.
codec g722-64 video codec h264
dtmf-relay rtp-nte sip-notify sip-kpml no vad
While troubleshooting, the engineer discovers that the Cisco Unified Border Element is giving the error "SIP/2.0 403 Forbidden".
Which two Cisco Unified Border Element configurations resolve this issue? (Choose two.)


A. voice service voip mode border-element ip address trusted list ipv4 10.1.1.0 255.255.255.0 ipv4 10.2.1.0 255.255.255.0 allow-connections sip to sip sip bind control source-interface loopback0 bind media source-interface loopback0
B. voice service voip no ip address trusted authenticate mode border-element allow-connections sip to sip sip bind control source-interface loopback0 bind media source-interface loopback0
C. voice service voip mode border-element ip address trusted list allow-connections sip to sip sip bind control source-interface loopback0 bind media source-interface loopback0
D. voice service voip mode border-element allow-connections sip to sip sip bind control source-interface loopback0 bind media source-interface loopback0
E. voice service voip mode border-element ip address trusted list ipv4 10.1.1.0 255.255 255.0 ipv4 10.3.1.0 255.255.255.0 allow-connections sip to sip sip bind control source-interface loopback0 bind media source-interface loopback0

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4 thoughts on “Which two Cisco Unified Border Element configurations resolve this issue?

  1. Yes both options are correct :

    so, if the question ask for two configurations choose : B & E.

  2. Better view of the answers, I believe its either of the answer will fix the issue and not both of them together.

    B
    voice service voip
    no ip address trusted authenticate
    mode border-element
    allow-connections sip to sip sip
    bind control source-interface loopback0
    bind media source-interface loopback0

    E
    voice service voip
    mode border-element
    ip address trusted list
    ipv4 10.1.1.0 255.255 255.0
    ipv4 10.3.1.0 255.255.255.0
    allow-connections sip to sip
    sip bind control source-interface loopback0
    bind media source-interface loopback0

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