Nortel-networks 1000S Manuel d'utilisateur télécharger pdf (Page 42)

Page 42 of 44 Configuration options

553-3031-010 Standard 3.00 August 2005

• If the master (Leader) Signaling Server is unavailable, a Follower

Signaling Server becomes the IP Telephony node master.

• Signaling Servers share telephone registrations (load-sharing).

• If a virtual trunk is unavailable, virtual trunk redundancy occurs (that is,

the call-processing software selects an alternate route).

• Signaling Servers can be configured for different types of redundancy for

their software components (for example, Alternate Gatekeeper, Failsafe

Gatekeeper).

• If the Primary Gatekeeper is unavailable, you can configure an Alternate

Gatekeeper (automatic database synchronization).

• If the Primary and Alternate Gatekeeper are unavailable, you can

configure a Failsafe Gatekeeper (at each Signaling Server).

Figure 7 on page 43 illustrates the handling of a network failure with

Survivable MG 1000S in place.

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Nortel-networks 1000S Manuel d'utilisateur Page 42