Instruction manual

Page 1394 of 3156 Electronic Switched Network
553-3001-306 Standard 10.00 January 2002
Network Call Transfer
Network Call Transfer (NXFER) enhances the operation of Call Transfer
(XFER) between two switches when a call is transferred back to the
originating switch. The regular Call Transfer feature requires two TIE trunks
to complete the call. With Network Call Transfer (NXFER), if the call is
transferred back to the originating switch as the same TIE trunk group, the
originating switch completes the transfer within itself and the TIE trunks are
dropped. For a detailed description of Network Call Transfer (NXFER) refer
to Basic and Network Alternate Route Selection: Description (553-2751-
100). The benefits derived from the NXFER feature include:
• minimal use of access TIE lines
• improved transmission performance, since TIE lines are not used for the
completed connection
• operation identical to that of Call Transfer (XFER)
NXFER operates within the following parameters:
• Meridian 1 proprietary telephones must be equipped with a Call Transfer
key.
• Network Signaling (NSIG) must be provided on both switches.
Network Signaling
Network Signaling (NSIG) provides a proprietary signaling protocol for
transmission of network call information between switches that operate in a
private network environment with Basic/Network Alternate Route Selection
(BARS/NARS) or CDP. Network Signaling (NSIG) can be equipped at the
Node and Main switches. For a detailed description of Network Signaling,
refer to Basic and Network Alternate Route Selection: Description (553-
2751-100).
NSIG supports transmission or reception of information between the
following switch types:
• Meridian 1 Node to Meridian 1 Node
• Meridian 1 Node to Meridian 1 Main
• Meridian 1 Node to an Electronic TIE Network (ETN) switch
• Meridian 1 Main to Meridian 1 Node