Why: dependency zope.interface is not compatible in the version
used by buster.

Why: impossible to test otherwise, because of execfile_ global

WAZO-2533: Yealink W80 firmware update

Reviewed-by: Pascal Cadotte Michaud <None>

WAZO-2328: Yealink T58W

Reviewed-by: Pascal Cadotte Michaud <None>

WAZO-2327: yealink-w70

Reviewed-by: Pascal Cadotte Michaud <None>

Digium: add intercom

Reviewed-by: Pascal Cadotte Michaud <None>

This and another patch in wazo plugin allow a digium d70 to work as intercom

fix error template funckeys Aastra 6865i

Reviewed-by: Pascal Cadotte Michaud <None>
Reviewed-by: Alexandre Fournier <None>

add short_label in fkeys

Reviewed-by: Alexandre Fournier <None>

disable ring splash function

Reviewed-by: https://github.com/apps/wazo-production-sf

gigaset N870: handle Handset= in User-Agent

Reviewed-by: https://github.com/apps/wazo-production-sf

WAZO-2371: define codecs

Reviewed-by: https://github.com/apps/wazo-production-sf

Why: otherwise the phone sends too much information in the SDP
negociation.

WAZO-2373: add Yealink firmware v86

Reviewed-by: https://github.com/apps/wazo-production-sf