A communication unit (CU) (109, 111) network controller (113) and
corresponding methods (603-609) are described that facilitate selectively
routing calls. The CU includes a transceiver (403) suitable to support an
air interface with a local area network (LAN) (101) and with a wide area
network (WAN) (105) and a controller (405) that is coupled to and
controlling the transceiver. These are each and collectively configured
to determine when a bearer leg within the WLAN will not support a call
attempt over the bearer leg and responsive to so determining, initiate
the call over another bearer leg, e.g. within the LAN or the WAN. The
determining includes, for example, receiving a message (703, 707, 713)
that indicates or implies that the call can not be supported.