Advanced SIP Settings

NB! Changing these settings requires in depth knowledge!

Get default values - Restore all settings to default (as when new from package).

NOTE! Press "Save" after your settings!


SIP proxy

On this page there are more advanced settings for how the SIP server will forward SIP messages.

Default request timeout - Used if the SIP INVITE message has not specified any expire timeout.

Maximum request timeout - The maximum allowed request timeout value.

SIP Server port - The listening port for the SIP server (Recommended value: 5060)

Requests for a foreign domain - How the SIP server should handle SIP messages addressed to other domains:
unlimited - Forward to the other domain (Recommended).
deny - Do not forward the SIP message.

NOTE! Press "Save" after your settings!


Static domain forwarding - Domains which should override (bypass) DNS-lookups. Use 127.0.0.1 as IP address to specify that this unit should be used as SIP server for the given domain. If a domain in DNS points at this unit's IP address, but you want to use another SIP server you can enter it's IP address here.
Domain - Name of the domain in a SIP request.
Forward to (IP) - The IP address that SIP messages matching the domain shall be forwarded to, or 127.0.0.1 to specify a domain to host.

NOTE! Press "Save" after your settings!


Proxy rules

Rules that limit access to the SIP server by matching the source IP address of the SIP message.

Proxy default access limit - Access limit for SIP messages that do not match a specific rule:
unlimited - Forward, without restrictions.
limited - Forward, if the SIP message can be verified as correctly addressed (by statefully inspecting SIP messages).
no access - Do not forward the SIP message.

IP Address - The IP address that is used together with the subnet mask to match the source IP address of a SIP message.

Subnet Mask - The subnet mask that is used together with the IP address to match the source IP address of a SIP message.

Access limit - Access limit of a SIP message matching the rule:
unlimited - Forward, without restrictions.
limited - Forward, if the SIP message can be verified as correctly addressed (by statefully inspecting SIP messages).
no access - Do not forward the SIP message.

NOTE! Press "Save" after your settings!


Bypassing of outbound proxy

Exceptions to the rule of sending all outbound SIP requests to the outbound proxy. If a SIP message is matched, the outbound proxy is bypassed.

IP Address , Subnet Mask - IP address and subnet mask to match a network, to which the SIP message would be sent if there was no outbound proxy set.

NOTE! Press "Save" after your settings!


Advanced

Forwarding of class 1 responses - How to forward SIP messages with in progress information.
All - Forward, without restrictions.
If higher status code - Forward only if the SIP message have higher status code.
none - Do not forward the SIP message.

Handling of class 3 responses - How to handle SIP responses redirecting to a new SIP address.
Forward - Forward, without restrictions.
Retry - Try to contact the user at the new address (recursion).

TCP connection timeout - TCP connections to the SIP server not transmitting valid SIP messages are closed after the timeout. A value of 0 disables the SIP TCP server.

Max number of media streams per SIP request - Max number of data streams allowed to be set up between two users with a single SIP request.

Accept - MIME-types in SIP messages allowed to pass without restrictions. Multiple types can be entered, separated by comma. Wildcards are allowed.

Spoof protection - Spoofing is when an intruder pretends to have a false IP address.

Allow multiple RTP media senders - Warning! Check this only if you know this will solve your problem. Less secure.

Disable URL encryption - Warning! Check this only if you know this will solve your problem. Less secure.

NOTE! Press "Save" after your settings!


Read more online:
Advanced SIP Settings