On my V3 I already have a STMI card for the IP phones but was told that todo SIP trunking I need to purchase an additional STMI card. The V5 has a dual purpose STMI card which can handle ip phones and IP trunking and the V6 is coming in January.
Question - when I purchase the additional STMI card for the V3 will I be able todo SIP trunking between the other 2 PBX?
Want to dial extensions between the PBX.
Question - when I purchase the additional STMI card for the V3 will I be able todo SIP trunking between the other 2 PBX?
Want to dial extensions between the PBX.