| Description | This object specifies the direction in which CAS calls
will be accepted on this endpoint. If this object is set to
bidirectional(1): VISM can send and receive calls on this
endpoint
incoming(2) : calls from the connected PBX will be
accepted by VISM on this endpoint.
outgoing(3) : VISM will send calls towards the connected PBX and
not accept calls from the PBX.
The main difference between bidirectional and one-way trunks
is the occurrence of glare. On bidirectional trunks, since both
VISM and the connected PBX can seize the endpoint at
approximately the same time, glare (dual seizure) is likely to occur.
The protocol assigned to a bidirectional endpoint should be
capable of detecting and resolving glare.
Wink-start and delay-dial are examples of protocols capable of
glare handling and immediate-start, ground-start and loop-start,
of those that cannot.
This object cannot be configured if the signaling type for
the DS1 line to which this ds0 belongs is non-CAS.
For a CAS line, this object can only be configured after
associating this ds0 with an endpoint. This means that if
no endpoint was added for this Ds0, any configuration set
attempt will be rejected, but any get will be allowed. |