Redundant Cisco HSI servers with different versions

[mello_mello]

Greetings. I have 2 servers running Cisco HSI 4.1 software. I'm planing to migrate to version 4.3 one by one. Is it possible for HSI software to run properly when there is two different versions of HSI working simultaneously?

Regards

[htarra · Accepted solution]

It may be possible to run like this.

http://www.cisco.com/en/US/docs/voice_ip_comm/pgw/hsi/4.3/guide/43ch2.html#wp1043759

[mello_mello]

I've already done this migration. HSI 4.1 and 4.3 can both perfectly work simultaneously. But anyway, thx a lot!