Всем привет!

Помогите разобраться. Задача тривиальная, но я туплю.
Cisco 2811(FXS аналоговый телефон Directory number - 10002) подключена по E1 к Analog PBX (Directory number - 1002).
Звонки с 2811 на PBX проходят, обратно нет. Посоветуйте как решить вопрос.

sh run:

isdn switch-type primary-net5

controller E1 0/2/1
framing NO-CRC4
pri-group timeslots 1-31

interface Serial0/2/1:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn incoming-voice voice
no cdp enable

voice-port 0/1/0
cptone RU
caller-id enable

sh dial-peer voice summ
dial-peer hunt 0
             AD                                    PRE PASS                OUT
TAG    TYPE  MIN  OPER PREFIX    DEST-PATTERN      FER THRU SESS-TARGET    STAT PORT
1      pots  up   up                                0                      down 0/2/1:15
303    voip  up   up             3033...$           0  syst ipv4:142.3.64.11
3031   voip  up   up             3033...$           1  syst ipv4:142.3.64.12
400    pots  up   down 01185224- 4...$              0                      down
                       03
200    pots  up   down 1408203   2...$              0                      down
20001  pots  up   down                              0                           50/0/1
20002  pots  up   down                              0                           50/0/2
20003  pots  up   down                              0                           50/0/3
20004  pots  up   down                              0                           50/0/4
20005  pots  up   down                              0                           50/0/5
20006  pots  up   down                              0                           50/0/6
10002  pots  up   down                              0                      down 0/1/0
91002  pots  up   up             91002              0                      up   0/2/1:15

debug isdn q931 при вызове с Avaya DN 1002 на 2811 DN 10002:

*Jul 12 16:41:14.675: ISDN Se0/2/1:15 Q931: RX <- SETUP pd = 8  callref = 0x1230
        Bearer Capability i = 0x8090A3
                Standard = CCITT
                Transfer Capability = Speech
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0xA1838D
                Preferred, Channel 13
        Progress Ind i = 0x8183 - Origination address is non-ISDN
        Display i = '1002'
        Calling Party Number i = 0xA1, '1002'
                Plan:ISDN, Type:National
        Called Party Number i = 0x80
                Plan:Unknown, Type:Unknown
*Jul 12 16:41:14.691: ISDN Se0/2/1:15 Q931: TX -> CALL_PROC pd = 8  callref = 0x9230
        Channel ID i = 0xA9838D
                Exclusive, Channel 13
*Jul 12 16:41:14.695: ISDN Se0/2/1:15 Q931: TX -> DISCONNECT pd = 8  callref = 0x9230
        Cause i = 0x8090 - Normal call clearing
*Jul 12 16:41:14.735: ISDN Se0/2/1:15 Q931: RX <- RELEASE pd = 8  callref = 0x1230
*Jul 12 16:41:14.739: ISDN Se0/2/1:15 Q931: TX -> RELEASE_COMP pd = 8  callref = 0x9230