Symptom:
Sometimes lose audio when making call via 3G+edge

Conditions:
Version:10.5.0.186182
User Story: Regression
Frequency: Reproducible
Phone only account

ummary:
Sometimes one way audio for phone only account via 3G.

Step to Reproduce:
1.Login alpha phone only account via 3G from jabber for Aphone
2.Make a call with jabber for iPad(CUP via wifi)
3.Check audio

Expect Result:
No audio issue

Actual Result:
No audio on iPhone,had audio on iPad