The best replacement for a2billing is astpp.

The best alternatives to a2billing are rated as following:
★★★★★  astpp
★★★★  astbill
★★  vbilling

Your alternative for a2billing is not listed? Suggest!
Speaking about a2billing, one probably shouldn't forget about asterisk 1.8.

Other search terms related to a2billing and their ratings are:
★★★★★ asterisk 1.8
★★★★★ opensips
★★★★ freepbx
★★★★ asterisknow
★★★ asterisk 1.6
★ trixbox
★ elastix
You have in mind a companion for a2billing and it is not yet here? Propose!



Google Trends

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a2billing
astpp
astbill