On which three Avaya IP Office trunk types is Mobile Call Control supported? (Choose three.)

Question

Options

• ASIP trunk
• BPRI trunk
• CAnalog trunk
• DBRI trunk
• EH323

• A
  89% (41)
• C
  7% (3)
• E
  4% (2)

Explanation

Mobile Call Control (MCC) on Avaya IP Office requires trunk types that support robust out-of-band signaling - SIP trunks provide this via SIP protocol messaging, while PRI and BRI trunks provide it through ISDN D-channel signaling, making all three capable of carrying the control messages MCC depends on.

Why the distractors are wrong:

• C (Analog trunk): Analog trunks use in-band signaling only, with no separate signaling channel to carry MCC control messages - they simply lack the protocol support.
• E (H.323): In IP Office, H.323 is used for endpoints (phones), not trunks in the same MCC-capable context; MCC trunk support does not extend to H.323 gateway trunks.

Memory tip: Think "SIP + ISDN = MCC" - SIP is the IP side, and PRI/BRI are both ISDN flavors. If a trunk type has a proper signaling channel (D-channel for ISDN, SIP messaging for SIP), MCC can ride on it. Analog and H.323 fail that test.

No community discussion yet for this question.