1001403 - [Dialer][RIL][V1.3T] Cannot receive an incoming call while you are using 2G data network

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: RIL, defect)

Description

[William Hsu [:whsu]]

Attachment: RIL_20140425_002

* Description:
  User cannot receive an incomming call while user are using 2G network.
  This bug happens on V1.3T. Cannot reproduce it on Buri with V1.4 build. Might be a POVB issue?
  I would like to highlight this problem because vendor will ship Tarako device which only supports 2G and 2G edge data network.
  Attach the log. (RIL_20140425_002)

* Pre-condition:
  Prepare two mobile devices

* Reproduction steps:
  1. Device-A enables 2G only data network on setting app
     * Note: You can test it via Taiwan Mobile SIM card.
  2. Device-A launches the browser and visits a website
  3. Device-B makes a phone call to Device-A

* Expected result:
  Device-A can receives an incomming call

* Actual result:
  Device-A cannot receives any incomming call

* Reproduction build: V1.3t (Tarako)
  - Gaia      706f474230432c8cb01e124aee2c055ec902aa1d
  - Gecko     https://hg.mozilla.org/releases/mozilla-b2g28_v1_3t/rev/26ef3dded9ff
  - BuildID   20140424014003
  - Version   28.1

Comment 1

[Szu-Yu Chen [:aknow] (inactive)]

It's a limitation of 2G technology. You could not use data(PS) and telephony call(CS) simultaneously. However, modem may have some hack to make it possible.
- Buri uses Qcom's modem.
- Tarako uses SPRD's modem
They could have different capability. Suggest you to compare it with SPRD's android device.

Comment 2

[Hsin-Yi Tsai (she/her) [:hsinyi]]

Agree with Aknow.

Comment 3

[William Hsu [:whsu]]

I

Comment 4

[William Hsu [:whsu]]

As you mentioned, it seems like SPRD does not implement DTM because Android version(Tarako) also cannot receive incoming call.

Comment 5

[Joe Cheng [:jcheng] (please needinfo)]

http://en.wikipedia.org/wiki/Dual_Transfer_Mode
ni? James on the support of DTM on Tarako

Comment 6

[James Zhang (Spreadtrum)]

Loop Sam.

Comment 7

[sam.hua]

Hi,
sorry ,what does "DTM“ mean？

Comment 8

[shawn ku [:sku]]

DTM stands for Dual Transfer Mode.

http://en.wikipedia.org/wiki/Dual_Transfer_Mode

Hi Sam:
 Please help check with modem team to see if they can support DTM.

Comment 9

[Joe Cheng [:jcheng] (please needinfo)]

ni? James

Comment 10

[James Zhang (Spreadtrum)]

Loop Ming.

Comment 11

[James Zhang (Spreadtrum)]

tarako don't support DTM, it's known issue.

Comment 12

[BMO Automation]

Firefox OS is not being worked on