beautypg.com

Outbound proxy, Default obp domain – Siemens HIPATH 8000 User Manual

Page 205

background image

Alphabetical Reference

205

Outbound proxy

• The optiPoint 410/420 family S V7.0 implements outbound proxy rout-

ing according to RFC 3261. If set, the phone routes any request outside

the context of an existing dialog to the configured proxy, regardless of

the contents of the Request-URI. The phone does not apply this rule to

requests sent within the context of an existing dialog. These requests

will always be sent to the address indicated in the received Contact

header (the remote target) or, if present, the Record-Route header. See

also

RFC 3261

.

• If the user dials a URI "[email protected]" and the Outbound Proxy flag

is "Off" and the Server/Registrar is in domain "dom2.com" the phone

will attempt to resolve the domain part of the URI "dom1.com" the re-

sult will be form the request URI that is sent to the server in the

"dom2.com" domain.

• If the user dials a URI "[email protected]" and the Outbound Proxy flag

is on and the Server/Registrar is in domain "dom2.com" the phone will

not attempt to resolve the domain part of the URI "dom1.com" the re-

quest URI will contain "[email protected]" but will be sent to the Serv-

er/Registrar in the "dom2.com" domain. It is then upto the Server/Reg-

istrar to determine the location of the "dom1.com" domain and forward

the request there.

• With the Outbound Proxy flag "Off" if the user types just a phone num-

ber or name the domain part is automatically per pended and is based

on the configured Server/Registrar domain name or IP address eg. If

the Server/Registar is in "dom1.com" domain and the user dials

"123456" the request URI will be "[email protected]". The phone will

resolve the "dom1.com" part via DNS and forward the request there.

• With the Outbound Proxy flag "On" if the user types just a phone num-

ber or name the domain part can come from 1 of 2 possible sources.

If the menu item "Default OBP domain" Æ page 174 is configured then

this will be per pended to the name or number. If it is not configured

then the Server/Registrar domain will be per pended and the request

sent.

• If the Outbound Proxy flag is "On" and the Default OBP domain is set

and the user types a URI, not just a name or number, then the entered

domain will be used not the Default OBP domain thus providing an

override mechanism.

• If this flag is "Off" but a Default OBP domain is configured it will be ig-

nored.

• If DHCP delivers the address of an SIP Server according to draft-ietf-

sip-dhcp-06.txt the server must be treated as an Outbound Proxy serv-

er. In this case, if the Outbound Proxy Flag was "Off" but the server ad-

dress was delivered by DHCP this flag would be automatically enabled

and both the flag setting and the Server/Registrar address would be

read-only

• Configuration examples and their behaviors

(Server/Registrar Æ page 214 is in "dom1.com" and resolves to an IP

address "w.x.y.z", "dom2.com" resolves to "a.b.c.d"):