Zeck Audio STAC Force180 Guia de Instalação descarregar pdf (Página 26)

Rev. 1.00 12-02-13 26/41

Registration nat-traversal mode: nortel (no change)

This is the nat-traversal method to use together with certain Nortel devices. The discovery of the global IP

address and port is done by sending a PING request and examining the answer to that. After that a

registered the keep-alive is achieved with sending PING requests.

Mode: registration outbound

Command

Purpose

Step 1

[node](regout)# nat-traversal nortel

[keepalive-interval <seconds>]

Activate nat-traversal the Nortel way.

Default keepalive-interval: 55 seconds.

Registration nat-traversal mode: keep-alive (enhanced)

Up until now this mode always used OPTIONS requests for achieving the keep-alive. In addition

SmartWare supports PING requests for the same purpose. OPTIONS is still the default when not

explicitly specified otherwise in the command.

This nat-traversal method executes the same procedure for registration as the minimal mode. After that

either OPTIONS or PING requests are sent periodically for keeping the NAT open and detect changes.

Mode: registration outbound

Command

Purpose

Step 1

[node](regout)# nat-traversal keep-alive

[options | ping] [keepalive-interval

<seconds>]

Activate nat-traversal with OPTIONS or

PING as keep-alive. Default keepalive-

interval: 55 seconds.

Registration nat-traversal mode: flows (new)

When nat-traversal flows is selected then most of the „User Agent Procedures‟ described in RFC5626 are

executed for outbound registrations. Each sip gateway maintains its unique instance ID which is used on

the registrar to distinguish between flows for different gateways or devices. For each registration the

destination IP address is determined by the normal procedure. If a flow already exists for that destination,

then the REGISTER request is sent through that flow. Otherwise a new flow to that destination is created

before sending the request.

SmartWare currently does not support creating multiple flows for the same registered identity. Therefore

the „reg-id‟ parameter always is „1‟. If a REGISTER request receives a successful answer SmartWare

checks the „received‟ and „rport‟ parameters for correctness of the registered contact. If they do not

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Zeck Audio STAC Force180 Guia de Instalação Página 26