ZyXEL Communications ZYWALL 70 - V4.04 Guida Utente Scaricare il pdf (Pagina 108)

phone B. Thus will be fail on call setup. This limitation is SIP client related issue, some

SIP clients will send ACK request direct to the remote clients, some may send through

proxy server.

Figure 4.

(4) We do not support multiple SIP proxies in the middle of way.

We haven’t implemented or take care on this kind topology (Figure 5), so the result is still

unknown.

Figure 5

Appendix 15 The mechanism of hose-based load balance feature

(1) A PC in LAN side wants to download a file from the remote server in the Internet.

(2) ZyWALL 35 or ZyWALL 70(Multiple WAN product with Load Sharing feature in

Active/Active mode)

(3) PC sends a request to "Update Server" through "WAN1".

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ZyXEL Communications ZYWALL 70 - V4.04 Guida Utente Pagina 108