Refer to the exhibit. A customer submits this debug output, captured on a Cisco IOS router. Assuming that an MGCP gateway is configured with an ISDN BRI interface, which BRI changes resolve the issue?
A.
interface BRI0/1/1 no ip address isdn switch-type basic-net3 isdn incoming-voice voice isdn send-alerting isdn static-tei 0
B.
interface BRI0/1/0 no ip address isdn switch-type basic-net3 isdn point-to-multipoint-setup isdn incoming-voice voice isdn send-alerting isdn static-tei 0
C.
interface BRI0/1/1 no ip address isdn switch-type basic-net3 isdn point-to-point-setup isdn incoming-voice voice isdn send-alerting isdn static-tei 0
D.
interface BRI0/1/1 no ip address isdn switch-type basic-net3 isdn point-to-multipoint-setup isdn incoming-voice voice isdn send-alerting isdn static-tei 0
B - is wrong by port and A has no isdn point-to-XX command
The line looks bad to read, but it only differs in
-> isdn point-to-point-setup
-> isdn point-to-multipoint-setup
SABME is the first message sent during a Layer 2 connection sequence.
Its basic purpose is to reset the link and prepare it for a new connection.
SABMEs must be acknowledged by a UA.
There is no UA Acknowledgment
Generally, multiple circuits with a single pilot number are point-to-point.
Router(config-if)# isdn point-to-point-setup
(Optional) Configures the ISDN port to send SETUP messages on the static TEI (point-to-point link).
it is C - a tei is the "ISDN address" thats only needed when you are using a hub system with multiple endpoints. if you only have one endpoint connected then you are using tei=0, and are on a point-to-point connected
I think this is C. When you configure a static-tei then it should be point to point. Not point to multipoint.
upvoted 3 times
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DaKenjee
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