Synopsis:

CChold(port, channel)

Arguments:

       port – The logical E1/T1 port number.

channel – The channel number.

Description:   This function maps to the following Aculab function:

ACU_ERR call_hold(int handle);

This function allows an incoming or outgoing call to be put on hold.    If the call is successful then a second call handle is returned on this port and channel.     In order to distinguish between the original call handle and the new call handle on a port and channel then a call to the CCsetparty()  must be made.

Returns: This function returns 0 upon success or a negative error code.