Avaya BCM50 Guia de Configuração descarregar pdf (Página 22)

AT&T IP Flexible Reach and AT&T IP Flexible Reach with AT&T Business in a Box

Nortel BCM50 Release 3.0 SIP Configuration Guide

*Nortel, Nortel Networks, Nortel (Logo), the Globemark, CS1000 are trademarks of Nortel Networks.

Issue 1.5 Page 22 of 38

4.3.1 Failover to Secondary AT&T IP Border Element (IPBE) – NOT

SUPPORTED ON AT&T IP Flexible Reach with AT&T BUSINESS IN

A BOX

For AT&T IP Flexible Reach with AT&T Business in a Box customers, please skip

this section and continue on to Section 4.4.

Backup to a secondary AT&T IP Border Elements is supported on the BCM50

using the SIP “OPTIONS” keep-alive approach. The BCM50 will send SIP

“OPTIONS” messages to the AT&T IPBEs listed in the Outbound Proxy Table and

send VoIP calls based on whether or not the BCM50 receives a “200 OK” from

the IPBEs and the Load-balancing Weights values set for each entry.

Figure 15: Outbound Proxy Table for failover to secondary AT&T IPBEs

A Load-balancing weight of 0 means the IPBE is used as last resort. Any non-

zero number value indicates the ratio of calls (the specific IPBE’s load-balancing

weight to sum of all IPBE’s load-balancing weights) the BCM50 will send out to

each IPBE. In this example, the BCM50 will send 1 call for every 1 call made (in

essence, all calls) to the IPBE with IP address 135.25.29.135 and use

135.25.29.79 IPBE as backup.

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Avaya BCM50 Guia de Configuração Página 22