Chapter 3 REMOTE UNIT OVER IP FEATURES
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NWA-088654-001 Rev.1.0
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SYSTEM CONDITIONS
Conditions for Remote Unit Accommodation
• The number of Remote Units is a maximum of 46 (Unit number 05-50).
• For the system capacity of ISDN system or CCIS system, refer to the system capacity of System
Hardware Manual. Set the whole Remote UNIT over IP system within the system capacity and be
sure to mount the handler blade in the Unit where the interface blade is installed.
• The number of terminals/trunks accommodated at one Remote Unit should be a maximum of 288.
• Following is connected to the LAN port of the CPU blade at Main Unit.
Peer-to-Peer CCIS, OAI, PCPro
• Set the unique location number to each location group for proper setting of the VoIPDB channel se-
lection and CODEC for voice compression (setting of Unit Location).
• The system clock at Remote Unit synchronizes with the system clock at Main Unit. If the communi-
cations to Main Unit are interrupted, Remote Unit does not synchronize and operates at the hardware
clock on the CPU blade of Remote Unit.
• Remote Unit cannot accommodate the IPT (P2P CCIS)/SIP Trunk.
• A different metering area at each Remote Unit is not available because Main Unit corrects all call
metering through the whole system. If a call is originated from the COT at Remote Unit, it is charged
as the call originated from the COT at Main Unit.
• The services requiring continuous voice transmission such as Internal Zone Paging should not be
used at Remote Unit considering the traffic on the network.
• Multiple line service should be used among different units considering the traffic on the network.
• Unavailable services at Remote Unit are as follows.
– Attendant Console, Desk Console.
– All services using External Equipment Interface are not available.
– All services using VRS blade are not available.
• Station number of the stations accommodated in Remote Units should be divided with the Tenant
(CM12 Y=04) according to the PSTN/GSTN or private line to be connected, or each service to be
used.
• Set the unique trunk route to each Unit.
• Since Main Unit controls OAI, OAI terminals cannot be used at Remote Unit during survival mode
operation.
• Each Remote Unit must provide a hold tone to the station at the Remote Unit.
– External hold tone (using Pin Jack on the CPU blade):
Tone source connected to the other unit can be used.
– Internal hold tone: Available
– Hold tone using VRS: Not available
• Remote Unit can accommodate the Standard SIP Terminal. For details, refer to the System Manual.