Event Based Ccis - Q-Sig Transport - NEC NEAX 2400 IPX Programming Manual

E-24

EVENT BASED CCIS - Q-SIG TRANSPORT

1. General Description
This feature provides VIRTUAL TIE LINE for each event such as call origination and MCI message
transmission. Inter-PBX link for this feature is established on B-channels of the private ISDN line using CCIS
No. 7 signaling protocol. For addressing a specific terminal, Called Sub Address or Called DID Number is used
depending on the network configuration.
2. Operating Procedure
None.
3. Service Conditions
1. The ISDN Primary Rate Interface (PRI) trunk is used for this feature.
2. ETS 300 172 or ISO/IEC 11572 is available as ISDN interface for this service.
3. E-CCIS signal channel assignment is not necessary when activating via the private ISDN line because
E-CCIS line is controlled by D-channel of ISDN.
4. This feature is activated between two PBXs directly connected to each other. Therefore, this feature is not
available for the using tandem office.
5. Since this feature uses the B-channel for ISDN as the speech line, the speech line is not established when
all B-channels are busy.
6. When using Called Sub Address as addressing information:
(a) Sub Address-Addressing must be available in the ISDN network.
(b) different DID Numbers must be assigned to the ISDN line, the E-CCIS line.
For the E-CCIS line, DID Number is required for each D-channel.
(c) Sub Address assigned to the E-CCIS trunk must be common to both offices.
7. When using Called DID Number as addressing information:
(a) a different DID Number is required for each channel of the E-CCIS line.
(b) when multiple routes are assigned for the terminating office, call termination to an E-CCIS trunk must
not be allowed except when DID Number assigned to the trunk is dialed.
(c) different DID Numbers must be assigned to the ISDN line and the E-CCIS line. For the E-CCIS line,
DID Number is required by for each D-channel.
8. Each channel used for a E-CCIS line must be controlled by a single D-channel (i.e. Each channel must be
assigned to a single ISDN line).
EVENT BASED CCIS - Q-SIG TRANSPORT
NDA-24305 CHAPTER 6
Page 231
Revision 1.0