P2P connection between branch offices over a VPN (mesh connection)
Router
Site
PBX
Router
P2P
Router
Remote Office 1
Remote Office 2
Calls between IP telephones in separate branch offices establish a P2P connection directly through the VPN
routers at each branch.
Conditions
[General]
•
Three codecs are used for peer-to-peer calls: G.722, G.711, and G.729A. The speech quality of the codecs
varies as follows: (High) G.722, G.711, G.729A (Low).
When the preferred codec of each party differs, the call will be established using the lower codec. For
example, if the caller prefers G.711 while the called party prefers G.729A, the call will be established using
G.729A.
•
G.722 is only available for calls between KX-NT300 series IP-PTs, KX-NT500 series IP-PTs, and some
SIP extensions that support this codec during peer-to-peer communication.
•
Through system programming, it is possible to assign the preferred codec to use for IP-PTs and KX-UT
series SIP phones.
•
For non-KX-UT series SIP extensions, the priority of the codec that will be used can be specified via the
telephone itself.
•
For non-peer-to-peer calls via the DSP card, calls cannot be made or received when all of the card’s
resources are being used.
•
KX-UT series SIP phones and general SIP phones support P2P communication over SIP trunks.
•
KX-NT500 series IP-PTs support P2P communication over SIP trunks. Contact your dealer for the
compatible software version for each KX-NT500 series IP-PT. Other IP-PTs do not support this feature.
•
IP-CSs do not support P2P connections.
•
This PBX supports H.263/H.264 codecs for P2P video communication.
•
P2P communication using the T.38 protocol is supported for calls between IP extensions or IP extensions
and IP trunks. However, only SIP extensions and SIP trunks can be used.
[P2P Groups]
•
Telephones or SIP Trunks must belong to the same P2P group to establish a P2P connection. Telephones
or SIP Trunks can be assigned to the same P2P group.
•
Calls between IP extensions in different P2P groups are established via the DSP card in "DSP-through
mode". DSP-through mode is where only 1 DSP resource is required, regardless of the codec being used.
•
Calls between extensions or SIP Trunks in different P2P groups will consume DSP resources.
•
To activate P2P communication between IP extensions and IP trunks, set
IP Extension - SIP Trunk
P2P
to enable (
®
10.9 PBX Configuration—[2-9] System—System Options—Option 8—
Trunk P2P—IP Extension - SIP Trunk P2P).
Feature Guide
499
5.2.3 Peer-to-Peer (P2P) Connection
Содержание KX-NS500
Страница 14: ...14 Feature Guide Table of Contents...
Страница 15: ...Section 1 For Your Safety Feature Guide 15...
Страница 18: ...18 Feature Guide 1 1 1 For Your Safety...
Страница 19: ...Section 2 Call Handling Features Feature Guide 19...
Страница 40: ...PT Programming Manual References 720 Doorphone Call Destination 40 Feature Guide 2 1 2 Internal Call Features...
Страница 57: ...632 Maximum Number of Agents Feature Guide 57 2 2 2 Incoming Call Distribution Group Features...
Страница 107: ...User Manual References 1 2 1 Basic Calling Feature Guide 107 2 5 4 Trunk Call Features...
Страница 174: ...Feature Guide References 2 21 2 Flexible Buttons 174 Feature Guide 2 11 6 Flash Recall Terminate...
Страница 193: ...User Manual References 1 4 2 Holding a Call Feature Guide 193 2 13 1 Call Hold...
Страница 228: ...User Manual References 1 7 1 Paging 1 7 2 Answering Denying a Paging Announcement 228 Feature Guide 2 17 1 Paging...
Страница 321: ...2 1 4 Turning on the External Background Music BGM Feature Guide 321 2 30 1 Background Music BGM...
Страница 324: ...324 Feature Guide 2 30 2 Outgoing Message OGM...
Страница 325: ...Section 3 Unified Messaging System Feature Guide 325...
Страница 375: ...Section 4 Network Features Feature Guide 375...
Страница 464: ...464 Feature Guide 4 3 6 Network ICD Group...
Страница 465: ...Section 5 System Configuration and Administration Features Feature Guide 465...
Страница 506: ...Feature Guide References 6 1 Capacity of System Resources 506 Feature Guide 5 2 4 Portable Station PS Features...
Страница 560: ...560 Feature Guide 5 6 7 PING Confirmation...
Страница 561: ...Section 6 Appendix Feature Guide 561...
Страница 578: ...578 Feature Guide 6 5 2 PFMPR Software File Version 004 2xxxx...
Страница 579: ...Feature Guide 579 Notes...