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Distributed Communications System B Private Networking
Administration for Network Connectivity
CID: 77730 555-233-504 — Issue 1 — April 2000
324
DCS Over ISDN-PRI
D-channel
considerations
• The gateway node serves as the terminating node to the D-channel DCS network
as well as the terminating node to the traditional DCS network.
A PBX serving as an ISDN DCS Gateway node introduces some interesting
situations when administering processor channels in an associated traditional DCS
PBX. In a traditional DCS network, (BX.25 processor channel links) Remote
Port in the “Processor Channel Assignments” form refers to the processor
channel of the destination PBX. In an Integrated DCS network, Remote Proc
Chan in the “Processor Channel Assignments” form refers to the processor
channel of the Gateway PBX (if the destination PBX is an ISDN DCS PBX), not
the destination PBX.
On the contrary, Machine-ID in the “Processor Channel Assignments” form
refers to the destination PBX, either an ISDN DCS PBX or a traditional DCS
PBX. The Gateway PBX number
must not be used in this field if the destination
PBX is an ISDN DCS PBX.
Enhanced DCS
considerations
• If the DCS link fails, the administrator can choose to allow calls to continue
without class of restriction checking or to block all DCS calls to inward-restricted
stations.
LWC considerations • LWC cannot be successfully activated toward any system that is not capable of
storing the messages, either internally or in an associated adjunct.
• Messages from one node, through an intermediate node, to a remote node do not
require storage capability at the intermediate node.
• LWC transparency is supported for all DCS configurations except for cases when
either the activating node or the remote node is either an ENHANCED
DIMENSION PBX or a System 85 R2V1.
• Retrieval of LWC messages is permitted only from a terminal at the node where
the messages are stored.
• DCS LWC cannot be activated from an attendant console.
Trunk Group
Busy/Warning
Indication
considerations
• Trunk Group Busy and Trunk Group Warning Indication is particularly useful
with the Attendant Control of Trunk Group Access feature. The indicators alert
the attendant when control of access to local and remote trunk groups is necessary.