Товарищи меридианщики возможно ли прогнать SL-1 через Cisco . Насколько это реально? Или все таки только QSIG,DSS и E&M.

"Прогнать через" это imho очень не точная формулировка.
Если вы собираетесь поднимать протокол на отрезках между циской и М1, то это один вопрос. Ответ будет отрицательный - SL1 циска не понимает.
Если сумеете настроить циски так, чтобы они пробрасывали d-канал из конца в конец прозрачно, то это другой вопрос. Протокол в этом случае роли не играет.
Удачи

Варианта два:
1. Циска передает D-канал без изменений как SDLC поток, B-каналы жмем в какой-нибудь кодек.
2. Передаем все поверх IP не вмещиваясь в структуру (ежели позволяет полоса)

Да, а что касается SL1 - как правильно сказал PhoneMan - циска его не понимает

Для облегчения поиска на www.cisco.com

режим "Transparent CCS"

Мужики спасибо за хороший совет, может кто нибудь вышлет конфиг для Cisco на мыло morzanshik@bk.ru . Роутер стоит 7206. если не по адресу не серчайте, прижимают вот и ничего не могу поделать.

http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps1834/products_feature_guide09186a00800e9761.html#102061 4


Configuring for VoIP
The following configuration example configures CCS over IP using the clear channel codec. The commands used in the configurations are explained inline. Only relevant sections of the configuration are shown. The example assumes that the IP portion of the network is already in place.

hostname routerA
!
voice-card 1
!
controller E1 1/0
ds0-group 0 timeslots 16 type ext-sig
.
.
.
ds0-group 10 timeslots 10 type ext-sig
!
interface Ethernet0/0
ip address 30.30.30.2 255.255.255.252
no ip directed-broadcast
!
voice-port 1/0:0
compand-type a-law
timeouts wait-release 3
connection trunk 4000 answer-mode
!
voice-port 1/0:1
compand-type a-law
timeouts wait-release 3
connection trunk 5001 answer-mode
.
.
.
voice-port 1/0:10
compand-type a-law
timeouts wait-release 3
connection trunk 5010 answer-mode
!

The ds0-group command links the specified time slot of the E1 interface to the corresponding voice port, which is automatically created by the router. This allows the voice port to be tied to the correspondent dial-peer using the connection trunk command. The ext-sig type specifies that the signaling traffic is coming from an external source.

The DS0 group assigned to signaling, configured as ds0-group 0 timeslots 16, must have the corresponding voice port and dial-peer set for the clear-channel codec to enable transparent forwarding of the HDLC signaling protocol through the DSP.

The signaling DS0 of the E1 1/0 are configured to the dial-peer whose destination pattern matches the number 4000. The dial-peer voice 4000 voip command is used to forward the signaling channel over IP.

The voice DS0 channels of the E1 port1/0 are configured to the dial-peer whose destination pattern matches the number 5.... The dial-peer voice 5... voip is used to trunk the voice channels between routers.

dial-peer voice 4000 voip
destination-pattern 4000
codec clear-channel
session target ipv4:10.49.80.204
!
dial-peer voice 3000 pots
destination-pattern 3000
port 2/0:0
!
dial-peer voice 5000 voip
destination-pattern 5...
session target ipv4:10.49.80.204
!
dial-peer voice 2001 pots
destination-pattern 2001
port 2/0:1
.
.
.
dial-peer voice 2010 pots
destination-pattern 2010
port 2/0:10

The dial-peer voice 4000 voip is used to forward over IP the signaling channel from the router. The clear-channel codec must be applied to this dial-peer in order to avoid that compression, and VAD will be applied to the signaling channel, which requires a transparent 644-kbps path trough the DSP and the IP cloud.

The dial-peer voice 3000 pots forwards the incoming clear channel signaling to the correspondent signaling DS0 on the port E1 1/0 of the router . This is achieved leveraging on the voice-port 1/0:0 created with ds0-group 0 timeslots 16 type ext-sig.

The dial-peer voice 5000 voip is used to trunk the voice channels between routers. In this case, the codec used is the default G.729.

The dial-peer voice 2001 pots through dial-peer voice 2010 pots tie the VoIP legs of the trunked voice DS0s to the correspondent voice DS0's on the port E1 1/0 of the router.