铁通 E1 No D-channels available!

如题，log 内不停出现 WARNING[6734] chan_dahdi.c: No D-channels available! Using Primary channel 16 as D-channel anyway
用 dahdi_tool 查看是 ok 的， 用 pri show span 1 显示下信息如下：

CLI> pri show span 1
Primary D-channel: 16
Status: Provisioned, Down, Active
Switchtype: EuroISDN
Type: CPE
Overlap Dial: 0
Logical Channel Mapping: 0
Timer and counter settings:
N200: 3
N202: 3
K: 7
T200: 1000
T202: 10000
T203: 10000
T303: 4000
T305: 30000
T308: 4000
T309: 6000
T313: 4000
T-HOLD: 4000
T-RETRIEVE: 4000
T-RESPONSE: 4000
Overlap Recv: No

用 cat /proc/dahdi/1 显示信息如下：

~]# cat /proc/dahdi/1
Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" (MASTER) HDB3/CCS/CRC4
Timing slips: 1

1 TE4/0/1/1 Clear (In use)
2 TE4/0/1/2 Clear (In use)
3 TE4/0/1/3 Clear (In use)
4 TE4/0/1/4 Clear (In use)
5 TE4/0/1/5 Clear (In use)
6 TE4/0/1/6 Clear (In use)
7 TE4/0/1/7 Clear (In use)
8 TE4/0/1/8 Clear (In use)
9 TE4/0/1/9 Clear (In use)
10 TE4/0/1/10 Clear (In use)
11 TE4/0/1/11 Clear (In use)
12 TE4/0/1/12 Clear (In use)
13 TE4/0/1/13 Clear (In use)
14 TE4/0/1/14 Clear (In use)
15 TE4/0/1/15 Clear (In use)
16 TE4/0/1/16 HDLCFCS (In use)
17 TE4/0/1/17 Clear (In use)
18 TE4/0/1/18 Clear (In use)
19 TE4/0/1/19 Clear (In use)
20 TE4/0/1/20 Clear (In use)
21 TE4/0/1/21 Clear (In use)
22 TE4/0/1/22 Clear (In use)
23 TE4/0/1/23 Clear (In use)
24 TE4/0/1/24 Clear (In use)
25 TE4/0/1/25 Clear (In use)
26 TE4/0/1/26 Clear (In use)
27 TE4/0/1/27 Clear (In use)
28 TE4/0/1/28 Clear (In use)
29 TE4/0/1/29 Clear (In use)
30 TE4/0/1/30 Clear (In use)
31 TE4/0/1/31 Clear (In use)

/etc/dadhi/system.conf 配置如下：
# Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" (MASTER) HDB3/CCS/CRC4
span=1,1,0,ccs,hdb3,crc4
# termtype: te
bchan=1-15
dchan=16
bchan=17-31
#echocanceller=oslec,1-15,17-31

请问如何测试是铁通的 E1 未通还是系统问题?

谢谢

Frankie

你确定这条线路有CRC4? 最好问清楚铁通那边，一般国内的E1线路是没有CRC的
span=1,1,0,ccs,hdb3,crc4（没有的话去掉crc4）

Thank you! it works without CRC4

Frankie