求助：电信E1-电信153的号码呼入听不到彩铃

电信的E1，卡是DIGIUM的，听入时PRI的DEBUG消息如下：
(跟电信的技术联调的结果是他们说：没有发CONNECT消息给电信的交换机，然后电信的交换机就一直等answer，最后没有Answer，电信就报超时的错了。)

-- Accepting call from '1532588XXXX' to '8982xxxx' on channel 0/4, span 1
-- Executing [8982xxxx@test:1] Dial("Zap/4-1", "SIP/220test/8982xxxx") in new stack
-- cdata=SIP/220test/8982xxxx,dname=Zap/4-1
-- Called 220test/8982xxxx
hz800*sll->
< [ 00 01 01 56 ]
< Supervisory frame:
< SAPI: 00 C/R: 0 EA: 0
< TEI: 000 EA: 1
< Zero: 0 S: 0 01: 1 [ RR (receive ready) ]
< N(R): 043 P/F: 0
< 0 bytes of data
Handling message for SAPI/TEI=0/0
-- ACKing all packets from 41 to (but not including) 43
-- ACKing packet 42, new txqueue is -1 (-1 means empty)
-- Since there was nothing left, stopping T200 counter
-- Nothing left, starting T203 counter
-- Restarting T203 timer
-- SIP/220test-09ab5448 is making progress passing it to Zap/4-1
hz800*sll->
> [ 00 01 56 58 08 02 9a 48 03 1e 02 81 88 ]
hz800*sll->
> Informational frame:
> SAPI: 00 C/R: 0 EA: 0
> TEI: 000 EA: 1
> N(S): 043 0: 0
> N(R): 044 P: 0
> 9 bytes of data
Stopping T_203 timer
Starting T_200 timer
-- Restarting T200 timer
> Protocol Discriminator: Q.931 ( len=9
> Call Ref: len= 2 (reference 6728/0x1A48) (Terminator)
> Message type: PROGRESS (3)
> [1e 02 81 88]
> Progress Indicator (len= 4) [ Ext: 1 Coding: CCITT (ITU) standard (0) 0: 0 Location: Private network serving the local user (1)
> Ext: 1 Progress Description: Inband information or appropriate pattern now available. ( ]
hz800*sll->
< [ 00 01 01 58 ]
< Supervisory frame:
< SAPI: 00 C/R: 0 EA: 0
< TEI: 000 EA: 1
< Zero: 0 S: 0 01: 1 [ RR (receive ready) ]
< N(R): 044 P/F: 0
< 0 bytes of data
Handling message for SAPI/TEI=0/0
-- ACKing all packets from 42 to (but not including) 44
-- ACKing packet 43, new txqueue is -1 (-1 means empty)
-- Since there was nothing left, stopping T200 counter
-- Nothing left, starting T203 counter
-- Restarting T203 timer
hz800*sll-> quit
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1. 卡是digium的？不是openvox的?
2. 你用的软件版本，libpri, asterisk, dahdi or zaptel?
3. 在asterisk cli中使用pri set debug on span x打开debug，这样的话可以更清楚的看到Q.931的信息