<Help>
       Advanced Options Folder
        -----------------------
        As the name implies, this folder brings together some
        advanced parameters.  Except in Japan, you may want to
        skip this folder if you are a novice user. For Japan,
        please set the "Custom Network" field value to "ntt".

        This folder groups together parameters relating to:

                Dynamic Bandwidth Allocation
                Multilink Protocol (MP or RFC1717)
                LCP

        and some miscellaneous parameters as well.

        Double click RIGHT mouse button on any field name to get help.

<Dynamic Bandwidth Allocation>
        <Bandwidth Controller>

        This is only relevant if you have multiple phone lines defined.

        Only ONE side of the connection can have bandwidth controller
        turned on. The side with this field turned On will control the
        amount of bandwidth (number of ISDN links) used on the connection
        by adding and deleting links, as needed.

        The default is off.

        <High Water Threshold %>
        <High Water Samples>

        These are relevant only if Bandwidth Controller is On.

        When traffic exceeds this percentage ON THE LAST LINK ADDED,
        consistently for a count of "High Water Samples"  sampling
        periods, an attempt is made to add a link to the connection.

        Traffic is sampled every 2 seconds. A link runs at 100% when
        load on the link is at capacity, namely 56Kbps or 64Kbps.

        Default value is 60 percent.

        <Low Water Threshold %>
        <Low Water Samples>

        This is relevant only if Bandwidth Controller is On.

        When traffic falls below this percentage ON THE PENULTIMATE
        (link before the last one) LINK ADDED, consistently for a
        count of "Low Water Samples"  sampling periods,
        an attempt is made to delete a link from the connection.

        Traffic is sampled every 2 seconds. A link runs at 100% when
        load on the link is at capacity, namely 56Kbps or 64Kbps.

        Default value is 10 percent.

        <Max Links>

        This is relevant only if Bandwidth Controller is On.

        At most this many links will be added to the connection.
 
        This cannot exceed the number of phone lines defined
        for this connection.
 
        <Link Retry Count>
        <Link Suspend Timer>
 
        These are relevant only if Bandwidth Controller is On.
 
        Link Retry Count is number of retries attempting to add a link to
        the connection. If the link cannot be brought up after
        Link-retry-count attempts, the link is temporarily
        considered "out of service", for the "Link Suspend Timer"
        amount of seconds.
 
        Default Link Retry Count is 3,
        Default Link Suspend Timer is 300 seconds (5 minutes).
 
        <Clamp Links At>
 
        This specifies the number of channels that will stay connected
        once they have been added by the bandwidth controller
        (unless the connection is cleared by an external event).
 
        Default is set to 1, that is, only one link will be
        retained on the connection.
 
<MP>
<Multilink Protocol RFC1717>
 
        <Encapsulation>
        <Enable>
 
        This needs to be set to same value, PPP or MP,
        on BOTH sides of your connection.
 
        This field determines the type of header information
        (regular PPP header, or RFC1717 compliant MultiLink header)
        prepended to data transferred across the connection.
 
        If you plan to use multiple links, i.e., ISDN
        phone numbers, on this connection, you will probably want
        to select MP, but please check with the administrator at
        the other end of the connection to see if they support RFC1717 MP.
        
        There are some cases where you may want to use PPP encapsulation
        even though you plan to use multiple links:
        One example: you are interoperating with a Sun system running
        SunISDN 1.0.2, and wish to use Sun's proprietary scheme for
        multilink operation.
 
        <Encapsulate CP>
 
        This is relevant only if Encapsulation has been set to MP.
 
        BOTH sides of the connection must set this parameter the same way.
 
        Click this On if PPP Control Packets such as LCP packets
        will be or need to be encapsulated with MP headers.
 
        Default is On.  We recommend the default setting.
 
        <Short Sequence Number>
 
        Short Sequence Number will no longer be supported.

        This is relevant only if Encapsulation has been set to MP.
 
        BOTH sides of the connection must set this parameter the same way.
 
        Normal sequence numbers on receive fragments are 24 bits long.
        Short sequence number on receive fragments are 12 bits long.
 
        Default value is Off.
 
        <LCP MRRU>
 
        This is relevant only if Encapsulation has been set to MP.
 
        The LCP multilink Maximum Received Reconstructed Unit (MRRU)
        option indicates that the system sending it implements
        multilink protocol and, unless rejected, will construe all
        packets received on this link as being able to be received
        from the same peer on any other link where this option
        has been accepted.
 
        Default value is 1600 bytes.
        The maximum value is 3000 bytes.
 
        <Value>
        <LCP End Point>
 
        This is relevant only if Encapsulation has been set to MP.
 
 
        Default EndPoint is mac if the mac address can be obtained
        from the system. Otherwise, the "local" EndPoint is used and
        its value is set to the returned identifier of command "hostid".

        Setting this to off means that the LCP EndPoint option
        will not be negotiated with the remote side. 
        LCP EndPoint off and nil are no longer supported.
 
        Otherwise, this can be set to one of, with class values as shown
        (No value needed when none is shown below):
 
        Class           Value
 
        local           any string
        ip              IP address (for example: 129.255.23.2)
        mac             mac address (for example: 02:22:3e:4f:be:29)
        ppp
        psndn           directory number
 
        (Refer to rfc1717 for further information)
 
<Link Control Protocol LCP>
 
        <Restart Timer ms>
        <Max Restarts>
 
        Restart Timer is the time interval between sending LCP Config-Request
        packets, and Max Restarts is the maximum number of retries
        in  making the connection.
 
        Default Restart Timer is 3000 milliseconds.
        Default Max Restarts is 10.
 
        We recommend that you use default values for these  fields.
 
        <MRU>
 
        This is the Max Received Unit (MRU) in bytes.
        This is the maximum valid size of received packets.
 
        Default is 1500 bytes.  We recommend that you use the default
        value for this field.
 
<Special Parameters>
 
        <Use Caller ID>
 
        When Use Caller ID is On and caller_id is provided on an
        incoming call, the PPP manager uses it to find a path.
 
        When Use Caller ID is Off, caller_id provided on an
        incoming call is ignored. PPP manager relies on PAP or CHAP
        information to find a path.
 
        <Custom Network>
 
        Set for ntt in Japan only. Use the default value of "nil"
        in all other cases.
 
<Reset>
        Reverts back to the last values applied by doing a Save in any
        of the isdntool windows. All values changed in the window are
        lost.
 
<Defaults>
 
        Restores the default values for the parameters in this window.
        This will override any previously saved values if you Default
        and then OK (save).
 
<OK>
        Saves all global and specific parameters for all connections
        into the file /etc/opt/SUNWisdn/isppp.cf. The window then
        closes automatically.
 
        Isdntool will make a SINGLE BACKUP COPY ON EACH Save. If you
        make a mistake in applying the configuration, the old configuration
        file can be retrieved from /etc/opt/SUNWisdn/isppp.cf.bak

<Save>
        Saves all global and specific parameters for all connections
        into the file /etc/opt/SUNWisdn/isppp.cf
 
        Note, isdntool will make a SINGLE BACKUP COPY ON EACH Save. If you
        make a mistake in applying the configuration, the old configuration
        file can be retrieved from /etc/opt/SUNWisdn/isppp.cf.bak file.
 
<Save & Dismiss>
        Saves all parameters associated with this connection.
        Parameters are saved to an intermediate file.
        After saving, this window is closed.
 
        Note that this only saves THIS connection.
        You must again press "Save and Dismiss" on the
        "PPP Configuration Options" window (the one showing the
        Connection Database) in order to save all parameters
        associated with all connections to the PPP configuration
        file /etc/opt/SUNWisdn/isppp.cf.
         
<Dismiss>
        WARNING: this exits the "Connection Settings" window without
        saving any new data you may have entered for this connection.
