Q42Voice Gateways and Session Border Controllers
Refer to the exhibit. A customer provides this debug output, captured on a Cisco IOS router. Assuming an MGCP gateway is configured with an ISDN BRI interface, which BRI changes resolve the problem?
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Discussion · 2
C 6
Selected Answer: C
B is wrong by port and A has no isdn point-to-XX command
The line is a bit hard to read, but it only changes 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 get it ready 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).
C 3
Selected Answer: C
I think it's C. When you configure a static-tei then it should be point to point, not point to multipoint.