Symptom
when sccp phones are in SRST mode with overlap-signal command enabled, + dialing does not work. In normal SRST mode, it works. For SIP, all the scenarios work fine.
Conditions
Reproducible in IOS version 15.5(3)M; IOS-XE version 15.5(3)S2
Workaround
No workaround as of now
Further Problem Description
Reproduce steps:
conf t
call-manager-fallback
overlap-signal
----------------------------------
make dial-peers for + dialing.
for sccp phones, it doesnt work. CCAPI layer doesnt show + as input. We can see the input from sccp phones when + key is pressed in ephone debugs.
-------------------------------------
conf t
voice register global
overlap-signal
--------------------------------------
using sip dialpeers for + dialing.
call works fine for sip phones.
