يزود هذا وثيقة عينة تشكيل ل ISDN معدل قارن (BRI)، ويوضح cisco مسحاج تخديد سلوك مع in regard to النهاية معين (TEI) عملية تفاوض.
لا توجد متطلبات خاصة لهذا المستند.
تستند المعلومات الواردة في هذا المستند إلى إصدارات البرامج والمكونات المادية التالية:
برنامج Cisco IOS؟؟ برنامج الإصدار 12.2(6).
كافة الأنظمة الأساسية للأجهزة.
ملاحظة: تم إدخال الأمر isdn tei-negotiation preserve في الإصدار 12.2(6) من البرنامج Cisco IOS Software و 12.2(6)T.
تم إنشاء المعلومات الواردة في هذا المستند من الأجهزة الموجودة في بيئة معملية خاصة. بدأت جميع الأجهزة المُستخدمة في هذا المستند بتكوين ممسوح (افتراضي). إذا كانت شبكتك مباشرة، فتأكد من فهمك للتأثير المحتمل لأي أمر.
للحصول على مزيد من المعلومات حول اصطلاحات المستندات، ارجع إلى اصطلاحات تلميحات Cisco التقنية.
وفي بعض البلدان الأوروبية (مثل بلجيكا وهولندا)، جرت العادة على أن تقوم شركة الهاتف (Telco) بقطع اتصال ISDN Layer1 عندما يكون خط BRI غير نشط لفترة معينة لأسباب تتعلق بتوفير الطاقة. هذه البدائل ممكنة:
يمكن الحفاظ على علامات TEI التي تم تعيينها بالفعل بعد توقف رفرفة الطبقة 1.
يمكن تكوين برنامج Cisco IOS software لإعادة التفاوض على TEI في كل مرة نقاط الوصول من الطبقة 1.
في هذا القسم، تُقدّم لك معلومات تكوين الميزات الموضحة في هذا المستند.
ملاحظة: للعثور على معلومات إضافية حول الأوامر المستخدمة في هذا المستند، أستخدم أداة بحث الأوامر (للعملاء المسجلين فقط).
يستخدم هذا المستند إعداد الشبكة التالي:
في هذا المثال، نستخدم موجهات Cisco 2500 مع خطوط BRI.
يستخدم هذا المستند التكوينات التالية:
كيفن
كريمسون
كيفن |
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kevin#show running-config ! version 12.2 service timestamps debug datetime msec service timestamps log datetime msec hostname kevin ! username krimson password ! isdn switch-type basic-net3 ! interface BRI0 no ip address encapsulation ppp dialer rotary-group 1 dialer-group 1 isdn switch-type basic-net3 isdn tei-negotiation preserve no cdp enable ppp authentication chap ! interface Dialer1 ip address 10.9.8.2 255.255.255.0 encapsulation ppp dialer in-band dialer map ip 10.9.8.1 name krimson 027208196 dialer-group 1 no cdp enable ppp authentication chap ! dialer-list 1 protocol ip permit ! line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 exec-timeout 0 0 password login ! end |
كريمسون |
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krimson#show running-config ! version 12.2 ! service timestamps debug datetime msec service timestamps log datetime msec ! hostname krimson ! username kevin password ! isdn switch-type basic-net3 ! interface BRI0 no ip address encapsulation ppp no ip route-cache no ip mroute-cache no keepalive dialer rotary-group 1 isdn switch-type basic-net3 no fair-queue no cdp enable ppp authentication chap ! interface Dialer1 ip address 10.9.8.1 255.255.255.0 encapsulation ppp no ip route-cache no ip mroute-cache load-interval 30 no keepalive dialer in-band dialer map ip 10.9.8.2 name kevin 027202094 dialer-group 1 no fair-queue no cdp enable ppp authentication chap ! dialer-list 1 protocol ip permit ! line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 exec-timeout 0 0 password login ! end |
يوفر هذا القسم معلومات يمكنك إستخدامها للتأكد من أن التكوين يعمل بشكل صحيح.
يتم دعم بعض أوامر العرض بواسطة أداة مترجم الإخراج (العملاء المسجلون فقط)، والتي تتيح لك عرض تحليل إخراج أمر العرض.
show isdn status؟؟؟يعرض حالة جميع واجهات ISDN.
kevin#show isdn status Global ISDN Switchtype = basic-net3 ISDN BRI0 interface dsl 0, interface ISDN Switchtype = basic-net3 Layer 1 Status: DEACTIVATED Layer 2 Status: Layer 2 NOT Activated !--- TEI is removed Layer 3 Status: 0 Active Layer 3 Call(s) Active dsl 0 CCBs = 0 The Free Channel Mask: 0x3 Number of L2 Discards = 0, L2 Session ID = 10 Total Allocated ISDN CCBs = 0
يوفر هذا القسم معلومات يمكنك استخدامها لاستكشاف أخطاء التكوين وإصلاحها.
ملاحظة: قبل إصدار أوامر تصحيح الأخطاء، راجع المعلومات المهمة في أوامر تصحيح الأخطاء.
debug isdn q921؟؟؟يعرض إجراءات الوصول إلى طبقة إرتباط البيانات (الطبقة 2) التي تحدث في الموجه على القناة D (LAPd) من واجهة ISDN الخاصة به.
debug isdn q931؟؟يعرض معلومات حول إعداد المكالمات وإنهائها لاتصالات شبكة ISDN (الطبقة 3)، بين الموجه المحلي (جانب المستخدم) والشبكة.
debug isdn events؟؟؟يعرض أحداث ISDN التي تحدث على جانب المستخدم (على الموجه) لواجهة ISDN.
debug bri؟؟؟يعرض معلومات تصحيح الأخطاء على نشاط توجيه ISDN BRI.
فيما يلي إخراج تصحيح الأخطاء على Kevin:
kevin# *Mar 1 03:04:14.235: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:04:14.235: BRI: write_sid: scp = 80, wrote = 93 *Mar 1 03:04:14.239: BRI0: DEACTIVATED, state F1, event LSD *Mar 1 03:04:14.243: BRI: write_sid: scp = 0, wrote = 1B *Mar 1 03:04:14.243: BRI: write_sid: scp = 0, wrote = 20 *Mar 1 03:04:14.243: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:04:14.247: BRI: write_sid: scp = A0, wrote = 93 *Mar 1 03:04:14.247: BRI0: DEACTIVATED, state F3, event AP *Mar 1 03:04:14.251: BRI: write_sid: scp = 0, wrote = 3 *Mar 1 03:04:14.255: ISDN BR0: Recvd MPH_IIC_IND from L1 *Mar 1 03:04:14.263: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:04:14.263: BRI: write_sid: scp = E0, wrote = 93 *Mar 1 03:04:14.267: BRI0: PENDING, state F7, event AI *Mar 1 03:04:14.267: BRI: Received activation indication. *Mar 1 03:04:14.271: Flush all frames in the queue if any *Mar 1 03:04:14.275: ISDN BR0: L1 is IF_ACTIVE *Mar 1 03:04:14.275: ISDN BR0 EVENT: isdn_sw_cstate: State = 4, Old State = 4 *Mar 1 03:04:14.279: ISDN BR0: Incoming call id = 0x0030, dsl 0 *Mar 1 03:04:14.319: ISDN BR0: TX -> IDREQ ri=65279 ai=127 *Mar 1 03:04:14.323: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:14.355: ISDN BR0: RX <- IDASSN ri=65279 ai=66 *Mar 1 03:04:14.375: ISDN BR0: TX -> SABMEp c/r=0 sapi=0 tei=66 *Mar 1 03:04:14.379: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:14.399: ISDN BR0: RX <- UI c/r=1 sapi=0 tei=127 i=0x08011C05A1040288901801896C0A218332373230383139367009A13237323032303934 *Mar 1 03:04:14.435: SETUP pd = 8 callref = 0x1C *Mar 1 03:04:14.443: Sending Complete *Mar 1 03:04:14.443: Bearer Capability i = 0x8890 *Mar 1 03:04:14.451: Channel ID i = 0x89 *Mar 1 03:04:14.455: Calling Party Number i = 0x21, 0x83, '27208196', Plan:ISDN, Type:National *Mar 1 03:04:14.475: Called Party Number i = 0xA1, '27202094', Plan:ISDN, Type:National *Mar 1 03:04:14.495: ISDN BR0: RX <- UAf c/r=0 sapi=0 tei=66 *Mar 1 03:04:14.503: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 66 changed to up *Mar 1 03:04:14.515: CCBRI_Go Fr L3 pkt (Len=35) : *Mar 1 03:04:14.515: 5 1 9C 90 A1 4 2 88 90 18 1 89 6C A 21 83 32 37 32 30 38 31 39 36 70 9 A1 32 37 32 30 32 30 39 34 *Mar 1 03:04:14.527: *Mar 1 03:04:14.531: ISDN BR0: Incoming call id = 0x0031, dsl 0 *Mar 1 03:04:14.535: ISDN BR0: LIF_EVENT: ces/callid 1/0x31 HOST_INCOMING_CALL *Mar 1 03:04:14.543: ISDN BR0: HOST_INCOMING_CALL: (non-POTS) DATA *Mar 1 03:04:14.543: ISDN BR0: HOST_INCOMING_CALL: (1) call_type = DATA *Mar 1 03:04:14.547: ISDN BR0: HOST_INCOMING_CALL: voice_answer_data = FALSE call type is DATA *Mar 1 03:04:14.551: ISDN BR0: Event: Received a DATA call from 27208196 on B1 at 64 Kb/s *Mar 1 03:04:14.551: ISDN BR0: Event: Accepting the call id 0x31 *Mar 1 03:04:14.555: ISDN BR0: RM returned call_type 0 resource type 0 response 1 *Mar 1 03:04:14.559: CCBRI_Go Fr Host InPkgInfo (Len=9) : *Mar 1 03:04:14.563: 7 0 1 0 31 3 18 1 89 *Mar 1 03:04:14.567: *Mar 1 03:04:14.575: ISDN BR0: isdn_send_connect(): msg 4, call id 0x31, ces 1 bchan 0, call type DATA *Mar 1 03:04:14.579: BRI: enable channel B1 *Mar 1 03:04:14.579: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up *Mar 1 03:04:14.591: ISDN: get_isdn_service_state(): idb 0x230B74 bchan 2 is_isdn 1 Not a Pri *Mar 1 03:04:14.595: CCBRI_Go Fr Host InPkgInfo (Len=6) : *Mar 1 03:04:14.599: 4 0 1 0 31 0 *Mar 1 03:04:14.603: *Mar 1 03:04:14.615: ISDN BR0: TX -> INFOc sapi=0 tei=66 ns=0 nr=0 i=0x08019C02180189 *Mar 1 03:04:14.627: CALL_PROC pd = 8 callref = 0x9C *Mar 1 03:04:14.631: Channel ID i = 0x89 *Mar 1 03:04:14.639: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:14.663: ISDN BR0: RX <- RRr sapi=0 tei=66 nr=1 *Mar 1 03:04:14.675: ISDN BR0: TX -> INFOc sapi=0 tei=66 ns=1 nr=0 i=0x08019C07 *Mar 1 03:04:14.679: CONNECT pd = 8 callref = 0x9C *Mar 1 03:04:14.687: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:14.711: ISDN BR0: RX <- RRr sapi=0 tei=66 nr=2 *Mar 1 03:04:15.567: ISDN BR0: RX <- INFOc sapi=0 tei=66 ns=0 nr=2 i=0x08011C0F *Mar 1 03:04:15.575: CONNECT_ACK pd = 8 callref = 0x1C *Mar 1 03:04:15.595: ISDN BR0: TX -> RRr sapi=0 tei=66 nr=1 *Mar 1 03:04:15.595: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:15.619: CCBRI_Go Fr L3 pkt (Len=4) : *Mar 1 03:04:15.619: F 1 9C 92 *Mar 1 03:04:15.623: *Mar 1 03:04:15.627: ISDN BR0: LIF_EVENT: ces/callid 1/0x31 HOST_CONNECT *Mar 1 03:04:15.631: BRI: enable channel B1 *Mar 1 03:04:15.631: ISDN BR0: Event: Connected to 27208196 on B1 at 64 Kb/s *Mar 1 03:04:16.223: BR0:1 DDR: dialer protocol up *Mar 1 03:04:17.187: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to up *Mar 1 03:04:20.591: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 027208196 krimson *Mar 1 03:04:25.591: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:04:25.595: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:25.615: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2
kevin#show isdn status Global ISDN Switchtype = basic-net3 ISDN BRI0 interface dsl 0, interface ISDN Switchtype = basic-net3 Layer 1 Status: ACTIVE Layer 2 Status: TEI = 66, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED I_Queue_Len 0, UI_Queue_Len 0 Layer 3 Status: 1 Active Layer 3 Call(s) CCB:callid=31, sapi=0, ces=1, B-chan=1, calltype=DATA Active dsl 0 CCBs = 1 The Free Channel Mask: 0x80000002 Number of L2 Discards = 0, L2 Session ID = 10 Total Allocated ISDN CCBs = 1
kevin# *Mar 1 03:04:35.623: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:04:35.627: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:35.647: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:04:45.655: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:04:45.659: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:45.679: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:04:55.683: ISDN BR0: RX <- RRp sapi=0 tei=66 nr=2 *Mar 1 03:04:55.691: ISDN BR0: TX -> RRf sapi=0 tei=66 nr=1 *Mar 1 03:04:55.695: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:05.691: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:05.695: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:05.715: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:15.724: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:15.728: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:15.748: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:25.756: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:25.760: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:25.780: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:35.788: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:35.792: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:35.812: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:45.820: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:45.824: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:45.844: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:55.852: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:55.856: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:55.880: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:06:05.888: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:06:05.892: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:05.912: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:06:15.920: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:06:15.924: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:15.944: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:06:17.024: BR0:1 DDR: idle timeout *Mar 1 03:06:17.028: BR0:1 DDR: disconnecting call *Mar 1 03:06:17.028: ISDN BR0: Event: Hangup call to call id 0x31 *Mar 1 03:06:17.032: BRI: disable channel B1 *Mar 1 03:06:17.032: ISDN BR0: process_disconnect(): call id 0x31, call type is DATA, b_idb 0x230B74, ces 1, cause Normal call clearing(0x10) *Mar 1 03:06:17.040: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from 27208196 krimson, call lasted 122 seconds *Mar 1 03:06:17.048: ISDN: get_isdn_service_state(): idb 0x230B74 bchan 2 is_isdn 1 Not a Pri *Mar 1 03:06:17.052: CCBRI_Go Fr Host InPkgInfo (Len=13) : *Mar 1 03:06:17.052: 5 0 1 0 31 3 8 1 90 8 2 80 90 *Mar 1 03:06:17.056: *Mar 1 03:06:17.072: ISDN BR0: TX -> INFOc sapi=0 tei=66 ns=2 nr=1 i=0x08019C4508028090 *Mar 1 03:06:17.084: DISCONNECT pd = 8 callref = 0x9C *Mar 1 03:06:17.088: Cause i = 0x8090 - Normal call clearing *Mar 1 03:06:17.096: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:17.124: ISDN BR0: RX <- RRr sapi=0 tei=66 nr=3 *Mar 1 03:06:17.556: ISDN BR0: RX <- INFOc sapi=0 tei=66 ns=1 nr=3 i=0x08011C4D *Mar 1 03:06:17.564: RELEASE pd = 8 callref = 0x1C *Mar 1 03:06:17.580: CCBRI_Go Fr L3 pkt (Len=4) : *Mar 1 03:06:17.584: 4D 1 9C 97 *Mar 1 03:06:17.584: *Mar 1 03:06:17.592: ISDN BR0: LIF_EVENT: ces/callid 1/0x31 HOST_DISCONNECT_ACK *Mar 1 03:06:17.596: ISDN: get_isdn_service_state(): idb 0x230B74 bchan 2 is_isdn 1 Not a Pri *Mar 1 03:06:17.600: ISDN BR0: HOST_DISCONNECT_ACK: call type is DATA *Mar 1 03:06:17.604: BRI: disable channel B1 *Mar 1 03:06:17.604: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down *Mar 1 03:06:17.612: BR0:1 DDR: disconnecting call *Mar 1 03:06:17.616: ISDN BR0: LIF_EVENT: ces/callid 1/0x31 HOST_DISCONNECT_ACK *Mar 1 03:06:17.620: ISDN: get_isdn_service_state(): idb 0x230B74 bchan 2 is_isdn 1 Not a Pri *Mar 1 03:06:17.624: ISDN BR0: HOST_DISCONNECT_ACK: call type is DATA *Mar 1 03:06:17.628: BRI: disable channel B1 *Mar 1 03:06:17.636: ISDN BR0: TX -> RRr sapi=0 tei=66 nr=2 *Mar 1 03:06:17.640: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:17.644: ISDN BR0: TX -> INFOc sapi=0 tei=66 ns=3 nr=2 i=0x08019C5A *Mar 1 03:06:17.652: RELEASE_COMP pd = 8 callref = 0x9C *Mar 1 03:06:17.660: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:17.684: ISDN BR0: RX <- RRr sapi=0 tei=66 nr=4 *Mar 1 03:06:18.940: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to down *Mar 1 03:06:27.693: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=2 *Mar 1 03:06:27.697: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:27.717: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=4 *Mar 1 03:06:32.781: ISDN BR0: RX <- DISCp c/r=1 sapi=0 tei=66 *Mar 1 03:06:32.785: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI 66 changed to down *Mar 1 03:06:32.793: ISDN BR0: TX -> UAf c/r=1 sapi=0 tei=66 *Mar 1 03:06:32.797: BRI: write_sid: scp = 0, wrote = E
kevin#show isdn status Global ISDN Switchtype = basic-net3 ISDN BRI0 interface dsl 0, interface ISDN Switchtype = basic-net3 Layer 1 Status: ACTIVE Layer 2 Status: TEI = 66, Ces = 1, SAPI = 0, State = TEI_ASSIGNED !--- ISDN Layer 2 is disconnected I_Queue_Len 0, UI_Queue_Len 0 Layer 3 Status: 0 Active Layer 3 Call(s) Active dsl 0 CCBs = 0 The Free Channel Mask: 0x3 Number of L2 Discards = 0, L2 Session ID = 10 Total Allocated ISDN CCBs = 0
kevin# *Mar 1 03:06:42.881: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:06:42.885: BRI: write_sid: scp = 90, wrote = 93 *Mar 1 03:06:42.885: BRI0: ACTIVATED, state F2, event DI *Mar 1 03:06:42.889: BRI: T4 timer started DEACT timer expired *Mar 1 03:06:43.493: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:06:43.493: BRI: write_sid: scp = 90, wrote = 93 *Mar 1 03:06:43.497: BRI: write_sid: scp = 0, wrote = 1 *Mar 1 03:06:43.497: BRI: write_sid: scp = 0, wrote = 0 *Mar 1 03:06:43.501: ISDN BR0 EVENT: isdn_sw_cstate: State = 0, Old State = 4 *Mar 1 03:06:43.505: BRI: disable channel B1 *Mar 1 03:06:43.505: BRI: disable channel B2 *Mar 1 03:06:43.509: ISDN BR0: Physical layer is IF_DOWN !--- ISDN Layer 1 deactivated due to no calls on BRI *Mar 1 03:06:43.509: ISDN BR0: Shutting down ME *Mar 1 03:06:43.513: ISDN BR0: Shutting down ISDN Layer 3
kevin#show isdn status Global ISDN Switchtype = basic-net3 ISDN BRI0 interface dsl 0, interface ISDN Switchtype = basic-net3 Layer 1 Status: DEACTIVATED Layer 2 Status: TEI = 66, Ces = 1, SAPI = 0, State = TEI_ASSIGNED !--- TEI is preserved due to used configuration I_Queue_Len 0, UI_Queue_Len 0 Layer 3 Status: 0 Active Layer 3 Call(s) Active dsl 0 CCBs = 0 The Free Channel Mask: 0x3 Number of L2 Discards = 0, L2 Session ID = 11 Total Allocated ISDN CCBs = 0
المراجعة | تاريخ النشر | التعليقات |
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1.0 |
09-Sep-2005 |
الإصدار الأولي |