十万火急！只能呼入，不能呼出了

D410P+SS7_ISUP，以前一直好好的，啥都没动，昨天下午突然呼不出去了，但是电话呼进来没问题，看状态也没啥问题，局方说呼出时信令没过去，认为是我这边的问题，请问我如何确定到底是哪儿的问题呀？

gateway1*CLI> ss7 link status
linkset ls1, link l1, schannel 16, sls 0, INSERVICE, rx: 0, tx: 2/3, sentseq/lastack: 101/101, total 475668128, 475668208

gateway1*CLI> ss7 status
linkset idle busy initiating resetting total incoming total outgoing
ls1 122 0 1 0 1070 3172

这样看不出来，你用ss7 dump，看看有没有发呼叫出去，以及对方回了什么

-- Executing [02810060@outbound] Dial("SIP/221.5.10.27-09521740", "SS7/ls1/10060||o") in new stack
-- chan_ss7: isup_send_iam: ISDN_H324M is not set.
-- Sent IAM CIC=52 ANI=02865532000 DNI=10060 RNI=
-- Called ls1/10060
-- SS7 hangup 'SS7/ls1/52' CIC=52 Cause=21 (state=7)
== Everyone is busy/congested at this time (1:0/0/1)
-- Executing [02810060@outbound] Hangup("SIP/221.5.10.27-09521740", "") in new stack
== Spawn extension (outbound, 02810060, 14) exited non-zero on 'SIP/221.5.10.27-09521740'