Sip Server Failover - Panasonic KX-NS700 Feature Manual

18.1.5 SIP Server Failover

Attended Transfer
Blind Transfer
Conditions
[General]
•
The availability of this feature depends on the SIP service provider.
•
Since the SIP service provider takes control of the transfer, the transferred call cannot be returned to the
PBX for further handling even if the transfer fails.
[Blind Transfer]
•
SIP extensions cannot use this feature.
•
This feature cannot be used when calling through DISA (→ 5.1.10 DISA (Direct Inward System Access)).
Installation Manual References
4.4 Virtual Cards
Operating Manual References
1.3.11 Call Transfer—Transferring to an Outside Party Using the SIP Service
PC Programming Manual References
9.10 PBX Configuration—[1-1] Configuration—Slot—Port Property—V-SIPGW—Supplementary Service
→Blind Transfer(REFER)
→Attended Transfer(REFER)
18.1.5 SIP Server Failover
Description
When communicating with a SIP server (e.g., when the V-SIPGW card is in INS status, when sending
periodic REGISTER requests), if the SIP server does not reply after sending the REGISTER/INVITE
request, the REGISTER/INVITE request is sent again using one of the following methods.
•
If a failover SIP server is registered, the REGISTER/INVITE request is sent to that server.
•
If a failover SIP server is not registered, a REGISTER/INVITE request is immediately sent to the
destination obtained from a DNS resolution of the registrar server name.
Conditions
•
The failover destination is decided based on the following order.
1.
The failover destination IP address of the SIP server/Registrar server
2.
DNS SRV record / A record round robin
•
If the above failover operation fails, communication is attempted over a public CO line rather than a SIP
CO line.
Automatic Rerouting of SIP CO line Calls to Public CO line
338 Feature Manual
Transfer is completed after announcing the transferred party. From
the extension user's perspective, this is the same as Call Transfer
with Announcement (→ 4.1.10 Call Transfer).
Transfer is completed immediately after dialing the transfer
destination's number.
This is similar to Call Transfer without Announcement (→ 4.1.10 Call
Transfer), except that the transferrer does not hear even a ringback
tone; the transferred call is connected directly to the destination.
Document Version 2017-06