I've got a Siemens HIPATH 3700 as PBX and I'm planning to migrate my structure to voip, but for some month I cannot migrate the T1 line, so I must use both Old Pbx and new Pbx.
How can I do for use voip structure with old PBX??
Use E1 (R2 or ISDN) to interconnect HP3700 and one Cisco Router (voice gateway) and add it on CallManager cluster.
With it, your ip telephony call to analog phones on th HP3700.
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