1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License
15  */
16 
17 package com.android.ims;
18 
19 import android.content.Context;
20 import android.os.RemoteException;
21 import android.telephony.Rlog;
22 import android.telephony.ims.ImsReasonInfo;
23 import android.telephony.ims.aidl.IImsConfig;
24 import android.telephony.ims.stub.ImsConfigImplBase;
25 
26 /**
27  * Provides APIs to get/set the IMS service feature/capability/parameters.
28  * The config items include:
29  * 1) Items provisioned by the operator.
30  * 2) Items configured by user. Mainly service feature class.
31  *
32  * @hide
33  */
34 public class ImsConfig {
35     private static final String TAG = "ImsConfig";
36     private boolean DBG = true;
37     private final IImsConfig miConfig;
38 
39     /**
40      * Broadcast action: the feature enable status was changed
41      *
42      * @hide
43      */
44     public static final String ACTION_IMS_FEATURE_CHANGED =
45             "com.android.intent.action.IMS_FEATURE_CHANGED";
46 
47     /**
48      * Broadcast action: the configuration was changed
49      * @deprecated Use {@link ImsConfig#addConfigCallback(ImsConfigImplBase.Callback)} instead.
50      * @hide
51      */
52     public static final String ACTION_IMS_CONFIG_CHANGED =
53             "com.android.intent.action.IMS_CONFIG_CHANGED";
54 
55     /**
56      * Extra parameter "item" of intent ACTION_IMS_FEATURE_CHANGED and ACTION_IMS_CONFIG_CHANGED.
57      * It is the value of FeatureConstants or ConfigConstants.
58      *
59      * @hide
60      */
61     public static final String EXTRA_CHANGED_ITEM = "item";
62 
63     /**
64      * Extra parameter "value" of intent ACTION_IMS_FEATURE_CHANGED and ACTION_IMS_CONFIG_CHANGED.
65      * It is the new value of "item".
66      *
67      * @hide
68      */
69     public static final String EXTRA_NEW_VALUE = "value";
70 
71     /**
72     * Defines IMS service/capability feature constants.
73     * @deprecated Use
74      * {@link android.telephony.ims.feature.MmTelFeature.MmTelCapabilities.MmTelCapability} instead.
75     */
76     public static class FeatureConstants {
77         public static final int FEATURE_TYPE_UNKNOWN = -1;
78 
79         /**
80          * FEATURE_TYPE_VOLTE supports features defined in 3GPP and
81          * GSMA IR.92 over LTE.
82          */
83         public static final int FEATURE_TYPE_VOICE_OVER_LTE = 0;
84 
85         /**
86          * FEATURE_TYPE_LVC supports features defined in 3GPP and
87          * GSMA IR.94 over LTE.
88          */
89         public static final int FEATURE_TYPE_VIDEO_OVER_LTE = 1;
90 
91         /**
92          * FEATURE_TYPE_VOICE_OVER_WIFI supports features defined in 3GPP and
93          * GSMA IR.92 over WiFi.
94          */
95         public static final int FEATURE_TYPE_VOICE_OVER_WIFI = 2;
96 
97         /**
98          * FEATURE_TYPE_VIDEO_OVER_WIFI supports features defined in 3GPP and
99          * GSMA IR.94 over WiFi.
100          */
101         public static final int FEATURE_TYPE_VIDEO_OVER_WIFI = 3;
102 
103         /**
104          * FEATURE_TYPE_UT supports features defined in 3GPP and
105          * GSMA IR.92 over LTE.
106          */
107         public static final int FEATURE_TYPE_UT_OVER_LTE = 4;
108 
109        /**
110          * FEATURE_TYPE_UT_OVER_WIFI supports features defined in 3GPP and
111          * GSMA IR.92 over WiFi.
112          */
113         public static final int FEATURE_TYPE_UT_OVER_WIFI = 5;
114     }
115 
116     /**
117     * Defines IMS service/capability parameters.
118     */
119     public static class ConfigConstants {
120 
121         // Define IMS config items
122         public static final int CONFIG_START = 0;
123 
124         // Define operator provisioned config items
125         public static final int PROVISIONED_CONFIG_START = CONFIG_START;
126 
127         /**
128          * AMR CODEC Mode Value set, 0-7 in comma separated sequence.
129          * Value is in String format.
130          */
131         public static final int VOCODER_AMRMODESET = CONFIG_START;
132 
133         /**
134          * Wide Band AMR CODEC Mode Value set,0-7 in comma separated sequence.
135          * Value is in String format.
136          */
137         public static final int VOCODER_AMRWBMODESET = 1;
138 
139         /**
140          * SIP Session Timer value (seconds).
141          * Value is in Integer format.
142          */
143         public static final int SIP_SESSION_TIMER = 2;
144 
145         /**
146          * Minimum SIP Session Expiration Timer in (seconds).
147          * Value is in Integer format.
148          */
149         public static final int MIN_SE = 3;
150 
151         /**
152          * SIP_INVITE cancellation time out value (in milliseconds). Integer format.
153          * Value is in Integer format.
154          */
155         public static final int CANCELLATION_TIMER = 4;
156 
157         /**
158          * Delay time when an iRAT transition from eHRPD/HRPD/1xRTT to LTE.
159          * Value is in Integer format.
160          */
161         public static final int TDELAY = 5;
162 
163         /**
164          * Silent redial status of Enabled (True), or Disabled (False).
165          * Value is in Integer format.
166          */
167         public static final int SILENT_REDIAL_ENABLE = 6;
168 
169         /**
170          * SIP T1 timer value in milliseconds. See RFC 3261 for define.
171          * Value is in Integer format.
172          */
173         public static final int SIP_T1_TIMER = 7;
174 
175         /**
176          * SIP T2 timer value in milliseconds.  See RFC 3261 for define.
177          * Value is in Integer format.
178          */
179         public static final int SIP_T2_TIMER  = 8;
180 
181          /**
182          * SIP TF timer value in milliseconds.  See RFC 3261 for define.
183          * Value is in Integer format.
184          */
185         public static final int SIP_TF_TIMER = 9;
186 
187         /**
188          * VoLTE status for VLT/s status of Enabled (1), or Disabled (0).
189          * Value is in Integer format.
190          */
191         public static final int VLT_SETTING_ENABLED = 10;
192 
193         /**
194          * VoLTE status for LVC/s status of Enabled (1), or Disabled (0).
195          * Value is in Integer format.
196          */
197         public static final int LVC_SETTING_ENABLED = 11;
198         /**
199          * Domain Name for the device to populate the request URI for REGISTRATION.
200          * Value is in String format.
201          */
202         public static final int DOMAIN_NAME = 12;
203          /**
204          * Device Outgoing SMS based on either 3GPP or 3GPP2 standards.
205          * Value is in Integer format. 3GPP2(0), 3GPP(1)
206          */
207         public static final int SMS_FORMAT = 13;
208          /**
209          * Turns IMS ON/OFF on the device.
210          * Value is in Integer format. ON (1), OFF(0).
211          */
212         public static final int SMS_OVER_IP = 14;
213         /**
214          * Requested expiration for Published Online availability.
215          * Value is in Integer format.
216          */
217         public static final int PUBLISH_TIMER = 15;
218         /**
219          * Requested expiration for Published Offline availability.
220          * Value is in Integer format.
221          */
222         public static final int PUBLISH_TIMER_EXTENDED = 16;
223         /**
224          *
225          * Value is in Integer format.
226          */
227         public static final int CAPABILITY_DISCOVERY_ENABLED = 17;
228         /**
229          * Period of time the capability information of the  contact is cached on handset.
230          * Value is in Integer format.
231          */
232         public static final int CAPABILITIES_CACHE_EXPIRATION = 18;
233         /**
234          * Peiod of time the availability information of a contact is cached on device.
235          * Value is in Integer format.
236          */
237         public static final int AVAILABILITY_CACHE_EXPIRATION = 19;
238         /**
239          * Interval between successive capabilities polling.
240          * Value is in Integer format.
241          */
242         public static final int CAPABILITIES_POLL_INTERVAL = 20;
243         /**
244          * Minimum time between two published messages from the device.
245          * Value is in Integer format.
246          */
247         public static final int SOURCE_THROTTLE_PUBLISH = 21;
248         /**
249          * The Maximum number of MDNs contained in one Request Contained List.
250          * Value is in Integer format.
251          */
252         public static final int MAX_NUMENTRIES_IN_RCL = 22;
253         /**
254          * Expiration timer for subscription of a Request Contained List, used in capability
255          * polling.
256          * Value is in Integer format.
257          */
258         public static final int CAPAB_POLL_LIST_SUB_EXP = 23;
259         /**
260          * Applies compression to LIST Subscription.
261          * Value is in Integer format. Enable (1), Disable(0).
262          */
263         public static final int GZIP_FLAG = 24;
264         /**
265          * VOLTE Status for EAB/s status of Enabled (1), or Disabled (0).
266          * Value is in Integer format.
267          */
268         public static final int EAB_SETTING_ENABLED = 25;
269         /**
270          * Wi-Fi calling roaming status.
271          * Value is in Integer format. ON (1), OFF(0).
272          */
273         public static final int VOICE_OVER_WIFI_ROAMING = 26;
274         /**
275          * Wi-Fi calling modem - WfcModeFeatureValueConstants.
276          * Value is in Integer format.
277          */
278         public static final int VOICE_OVER_WIFI_MODE = 27;
279         /**
280          * VOLTE Status for voice over wifi status of Enabled (1), or Disabled (0).
281          * Value is in Integer format.
282          */
283         public static final int VOICE_OVER_WIFI_SETTING_ENABLED = 28;
284         /**
285          * Mobile data enabled.
286          * Value is in Integer format. On (1), OFF(0).
287          */
288         public static final int MOBILE_DATA_ENABLED = 29;
289         /**
290          * VoLTE user opted in status.
291          * Value is in Integer format. Opted-in (1) Opted-out (0).
292          */
293         public static final int VOLTE_USER_OPT_IN_STATUS = 30;
294         /**
295          * Proxy for Call Session Control Function(P-CSCF) address for Local-BreakOut(LBO).
296          * Value is in String format.
297          */
298         public static final int LBO_PCSCF_ADDRESS = 31;
299         /**
300          * Keep Alive Enabled for SIP.
301          * Value is in Integer format. On(1), OFF(0).
302          */
303         public static final int KEEP_ALIVE_ENABLED = 32;
304         /**
305          * Registration retry Base Time value in seconds.
306          * Value is in Integer format.
307          */
308         public static final int REGISTRATION_RETRY_BASE_TIME_SEC = 33;
309         /**
310          * Registration retry Max Time value in seconds.
311          * Value is in Integer format.
312          */
313         public static final int REGISTRATION_RETRY_MAX_TIME_SEC = 34;
314         /**
315          * Smallest RTP port for speech codec.
316          * Value is in integer format.
317          */
318         public static final int SPEECH_START_PORT = 35;
319         /**
320          * Largest RTP port for speech code.
321          * Value is in Integer format.
322          */
323         public static final int SPEECH_END_PORT = 36;
324         /**
325          * SIP Timer A's value in milliseconds. Timer A is the INVITE request
326          * retransmit interval, for UDP only.
327          * Value is in Integer format.
328          */
329         public static final int SIP_INVITE_REQ_RETX_INTERVAL_MSEC = 37;
330         /**
331          * SIP Timer B's value in milliseconds. Timer B is the wait time for
332          * INVITE message to be acknowledged.
333          * Value is in Integer format.
334          */
335         public static final int SIP_INVITE_RSP_WAIT_TIME_MSEC = 38;
336         /**
337          * SIP Timer D's value in milliseconds. Timer D is the wait time for
338          * response retransmits of the invite client transactions.
339          * Value is in Integer format.
340          */
341         public static final int SIP_INVITE_RSP_RETX_WAIT_TIME_MSEC = 39;
342         /**
343          * SIP Timer E's value in milliseconds. Timer E is the value Non-INVITE
344          * request retransmit interval, for UDP only.
345          * Value is in Integer format.
346          */
347         public static final int SIP_NON_INVITE_REQ_RETX_INTERVAL_MSEC = 40;
348         /**
349          * SIP Timer F's value in milliseconds. Timer F is the Non-INVITE transaction
350          * timeout timer.
351          * Value is in Integer format.
352          */
353         public static final int SIP_NON_INVITE_TXN_TIMEOUT_TIMER_MSEC = 41;
354         /**
355          * SIP Timer G's value in milliseconds. Timer G is the value of INVITE response
356          * retransmit interval.
357          * Value is in Integer format.
358          */
359         public static final int SIP_INVITE_RSP_RETX_INTERVAL_MSEC = 42;
360         /**
361          * SIP Timer H's value in milliseconds. Timer H is the value of wait time for
362          * ACK receipt.
363          * Value is in Integer format.
364          */
365         public static final int SIP_ACK_RECEIPT_WAIT_TIME_MSEC = 43;
366         /**
367          * SIP Timer I's value in milliseconds. Timer I is the value of wait time for
368          * ACK retransmits.
369          * Value is in Integer format.
370          */
371         public static final int SIP_ACK_RETX_WAIT_TIME_MSEC = 44;
372         /**
373          * SIP Timer J's value in milliseconds. Timer J is the value of wait time for
374          * non-invite request retransmission.
375          * Value is in Integer format.
376          */
377         public static final int SIP_NON_INVITE_REQ_RETX_WAIT_TIME_MSEC = 45;
378         /**
379          * SIP Timer K's value in milliseconds. Timer K is the value of wait time for
380          * non-invite response retransmits.
381          * Value is in Integer format.
382          */
383         public static final int SIP_NON_INVITE_RSP_RETX_WAIT_TIME_MSEC = 46;
384         /**
385          * AMR WB octet aligned dynamic payload type.
386          * Value is in Integer format.
387          */
388         public static final int AMR_WB_OCTET_ALIGNED_PT = 47;
389         /**
390          * AMR WB bandwidth efficient payload type.
391          * Value is in Integer format.
392          */
393         public static final int AMR_WB_BANDWIDTH_EFFICIENT_PT = 48;
394         /**
395          * AMR octet aligned dynamic payload type.
396          * Value is in Integer format.
397          */
398         public static final int AMR_OCTET_ALIGNED_PT = 49;
399         /**
400          * AMR bandwidth efficient payload type.
401          * Value is in Integer format.
402          */
403         public static final int AMR_BANDWIDTH_EFFICIENT_PT = 50;
404         /**
405          * DTMF WB payload type.
406          * Value is in Integer format.
407          */
408         public static final int DTMF_WB_PT = 51;
409         /**
410          * DTMF NB payload type.
411          * Value is in Integer format.
412          */
413         public static final int DTMF_NB_PT = 52;
414         /**
415          * AMR Default encoding mode.
416          * Value is in Integer format.
417          */
418         public static final int AMR_DEFAULT_MODE = 53;
419         /**
420          * SMS Public Service Identity.
421          * Value is in String format.
422          */
423         public static final int SMS_PSI = 54;
424         /**
425          * Video Quality - VideoQualityFeatureValuesConstants.
426          * Value is in Integer format.
427          */
428         public static final int VIDEO_QUALITY = 55;
429         /**
430          * LTE threshold.
431          * Handover from LTE to WiFi if LTE < THLTE1 and WiFi >= VOWT_A.
432          */
433         public static final int TH_LTE1 = 56;
434         /**
435          * LTE threshold.
436          * Handover from WiFi to LTE if LTE >= THLTE3 or (WiFi < VOWT_B and LTE >= THLTE2).
437          */
438         public static final int TH_LTE2 = 57;
439         /**
440          * LTE threshold.
441          * Handover from WiFi to LTE if LTE >= THLTE3 or (WiFi < VOWT_B and LTE >= THLTE2).
442          */
443         public static final int TH_LTE3 = 58;
444         /**
445          * 1x threshold.
446          * Handover from 1x to WiFi if 1x < TH1x
447          */
448         public static final int TH_1x = 59;
449         /**
450          * WiFi threshold.
451          * Handover from LTE to WiFi if LTE < THLTE1 and WiFi >= VOWT_A.
452          */
453         public static final int VOWT_A = 60;
454         /**
455          * WiFi threshold.
456          * Handover from WiFi to LTE if LTE >= THLTE3 or (WiFi < VOWT_B and LTE >= THLTE2).
457          */
458         public static final int VOWT_B = 61;
459         /**
460          * LTE ePDG timer.
461          * Device shall not handover back to LTE until the T_ePDG_LTE timer expires.
462          */
463         public static final int T_EPDG_LTE = 62;
464         /**
465          * WiFi ePDG timer.
466          * Device shall not handover back to WiFi until the T_ePDG_WiFi timer expires.
467          */
468         public static final int T_EPDG_WIFI = 63;
469         /**
470          * 1x ePDG timer.
471          * Device shall not re-register on 1x until the T_ePDG_1x timer expires.
472          */
473         public static final int T_EPDG_1X = 64;
474         /**
475          * MultiEndpoint status: Enabled (1), or Disabled (0).
476          * Value is in Integer format.
477          */
478         public static final int VICE_SETTING_ENABLED = 65;
479 
480         /**
481          * RTT status: Enabled (1), or Disabled (0).
482          * Value is in Integer format.
483          */
484         public static final int RTT_SETTING_ENABLED = 66;
485 
486         // Expand the operator config items as needed here, need to change
487         // PROVISIONED_CONFIG_END after that.
488         public static final int PROVISIONED_CONFIG_END = RTT_SETTING_ENABLED;
489 
490         // Expand the operator config items as needed here.
491     }
492 
493     /**
494     * Defines IMS set operation status.
495     */
496     public static class OperationStatusConstants {
497         public static final int UNKNOWN = -1;
498         public static final int SUCCESS = 0;
499         public static final int FAILED =  1;
500         public static final int UNSUPPORTED_CAUSE_NONE = 2;
501         public static final int UNSUPPORTED_CAUSE_RAT = 3;
502         public static final int UNSUPPORTED_CAUSE_DISABLED = 4;
503     }
504 
505     /**
506      * Defines IMS get operation values.
507      */
508     public static class OperationValuesConstants {
509         /**
510          * Values related to Video Quality
511          */
512         public static final int VIDEO_QUALITY_UNKNOWN = -1;
513         public static final int VIDEO_QUALITY_LOW = 0;
514         public static final int VIDEO_QUALITY_HIGH = 1;
515     }
516 
517     /**
518      * Defines IMS video quality feature value.
519      */
520     public static class VideoQualityFeatureValuesConstants {
521         public static final int LOW = 0;
522         public static final int HIGH = 1;
523     }
524 
525    /**
526     * Defines IMS feature value.
527     */
528     public static class FeatureValueConstants {
529         public static final int ERROR = -1;
530         public static final int OFF = 0;
531         public static final int ON = 1;
532     }
533 
534     /**
535      * Defines IMS feature value.
536      */
537     public static class WfcModeFeatureValueConstants {
538         public static final int WIFI_ONLY = 0;
539         public static final int CELLULAR_PREFERRED = 1;
540         public static final int WIFI_PREFERRED = 2;
541     }
542 
ImsConfig(IImsConfig iconfig)543     public ImsConfig(IImsConfig iconfig) {
544         miConfig = iconfig;
545     }
546 
547     /**
548      * @deprecated see {@link #getConfigInt(int)} instead.
549      */
getProvisionedValue(int item)550     public int getProvisionedValue(int item) throws ImsException {
551         return getConfigInt(item);
552     }
553 
554     /**
555      * Gets the configuration value for IMS service/capabilities parameters used by IMS stack.
556      *
557      * @param item, as defined in com.android.ims.ImsConfig#ConfigConstants.
558      * @return the value in Integer format.
559      * @throws ImsException if the ImsService is unavailable.
560      */
getConfigInt(int item)561     public int getConfigInt(int item) throws ImsException {
562         int ret = 0;
563         try {
564             ret = miConfig.getConfigInt(item);
565         }  catch (RemoteException e) {
566             throw new ImsException("getInt()", e,
567                     ImsReasonInfo.CODE_LOCAL_SERVICE_UNAVAILABLE);
568         }
569         if (DBG) Rlog.d(TAG, "getInt(): item = " + item + ", ret =" + ret);
570 
571         return ret;
572     }
573 
574     /**
575      * @deprecated see {@link #getConfigString(int)} instead
576      */
getProvisionedStringValue(int item)577     public String getProvisionedStringValue(int item) throws ImsException {
578         return getConfigString(item);
579     }
580 
581     /**
582      * Gets the configuration value for IMS service/capabilities parameters used by IMS stack.
583      *
584      * @param item, as defined in com.android.ims.ImsConfig#ConfigConstants.
585      * @return value in String format.
586      *
587      * @throws ImsException if the ImsService is unavailable.
588      */
getConfigString(int item)589     public String getConfigString(int item) throws ImsException {
590         String ret = "Unknown";
591         try {
592             ret = miConfig.getConfigString(item);
593         }  catch (RemoteException e) {
594             throw new ImsException("getConfigString()", e,
595                     ImsReasonInfo.CODE_LOCAL_SERVICE_UNAVAILABLE);
596         }
597         if (DBG) Rlog.d(TAG, "getConfigString(): item = " + item + ", ret =" + ret);
598 
599         return ret;
600     }
601 
602     /**
603      * @deprecated see {@link #setConfig(int, int)} instead.
604      */
setProvisionedValue(int item, int value)605     public int setProvisionedValue(int item, int value) throws ImsException {
606         return setConfig(item, value);
607     }
608 
609     /**
610      * @deprecated see {@link #setConfig(int, String)} instead.
611      */
setProvisionedStringValue(int item, String value)612     public int setProvisionedStringValue(int item, String value) throws ImsException {
613         return setConfig(item, value);
614     }
615 
616     /**
617      * Sets the value for ImsService configuration item.
618      *
619      * @param item, as defined in com.android.ims.ImsConfig#ConfigConstants.
620      * @param value in Integer format.
621      * @return as defined in com.android.ims.ImsConfig#OperationStatusConstants
622      *
623      * @throws ImsException if the ImsService is unavailable.
624      */
setConfig(int item, int value)625     public int setConfig(int item, int value) throws ImsException {
626         int ret = OperationStatusConstants.UNKNOWN;
627         if (DBG) {
628             Rlog.d(TAG, "setConfig(): item = " + item +
629                     "value = " + value);
630         }
631         try {
632             ret = miConfig.setConfigInt(item, value);
633         }  catch (RemoteException e) {
634             throw new ImsException("setConfig()", e,
635                     ImsReasonInfo.CODE_LOCAL_SERVICE_UNAVAILABLE);
636         }
637         if (DBG) {
638             Rlog.d(TAG, "setConfig(): item = " + item +
639                     " value = " + value + " ret = " + ret);
640         }
641 
642         return ret;
643 
644     }
645 
646     /**
647      * Sets the value for ImsService configuration item.
648      *
649      * @param item, as defined in com.android.ims.ImsConfig#ConfigConstants.
650      * @param value in Integer format.
651      * @return as defined in com.android.ims.ImsConfig#OperationStatusConstants
652      *
653      * @throws ImsException if the ImsService is unavailable.
654      */
setConfig(int item, String value)655     public int setConfig(int item, String value) throws ImsException {
656         int ret = OperationStatusConstants.UNKNOWN;
657         if (DBG) {
658             Rlog.d(TAG, "setConfig(): item = " + item +
659                     "value = " + value);
660         }
661         try {
662             ret = miConfig.setConfigString(item, value);
663         }  catch (RemoteException e) {
664             throw new ImsException("setConfig()", e,
665                     ImsReasonInfo.CODE_LOCAL_SERVICE_UNAVAILABLE);
666         }
667         if (DBG) {
668             Rlog.d(TAG, "setConfig(): item = " + item +
669                     " value = " + value + " ret = " + ret);
670         }
671 
672         return ret;
673     }
674 
675     /**
676      * Adds a {@link ImsConfigImplBase.Callback} to the ImsService to notify when a Configuration
677      * item has changed.
678      *
679      * Make sure to call {@link #removeConfigCallback(ImsConfigImplBase.Callback)} when finished
680      * using this callback.
681      */
addConfigCallback(ImsConfigImplBase.Callback callback)682     public void addConfigCallback(ImsConfigImplBase.Callback callback) throws ImsException {
683         if (DBG) Rlog.d(TAG, "addConfigCallback: " + callback);
684         try {
685             miConfig.addImsConfigCallback(callback);
686         }  catch (RemoteException e) {
687             throw new ImsException("addConfigCallback()", e,
688                     ImsReasonInfo.CODE_LOCAL_SERVICE_UNAVAILABLE);
689         }
690     }
691 
692     /**
693      * Removes a {@link ImsConfigImplBase.Callback} from the ImsService that was previously added
694      * by {@link #addConfigCallback(ImsConfigImplBase.Callback)}.
695      */
removeConfigCallback(ImsConfigImplBase.Callback callback)696     public void removeConfigCallback(ImsConfigImplBase.Callback callback) throws ImsException {
697         if (DBG) Rlog.d(TAG, "removeConfigCallback: " + callback);
698         try {
699             miConfig.removeImsConfigCallback(callback);
700         }  catch (RemoteException e) {
701             throw new ImsException("removeConfigCallback()", e,
702                     ImsReasonInfo.CODE_LOCAL_SERVICE_UNAVAILABLE);
703         }
704     }
705 
706     /**
707      * @return true if the binder connection is alive, false otherwise.
708      */
isBinderAlive()709     public boolean isBinderAlive() {
710         return miConfig.asBinder().isBinderAlive();
711     }
712 }
713